# List of invertebrates of California

This list of invertebrates of California lists invertebrate species (animals without a backbone) that are found in the US State of California. This list includes animals from the land, from freshwater, and from the ocean. The sequence of phyla is alphabetical.
Species that are endemic to the State of California are indicated using an, introduced species with an, and invasive species with an.

## Acoelomorpha

| Species | Common name |
| Polychoerus carmelensis | |

## Annelida

Many of these species were described by Hulton Wood and Samuel James.
| Species | Common name |
| Allolobophora chlorotica | |
| Aporrectodea caliginosa | |
| Aporrectodea trapezoides | |
| Aporrectodea tuberculata | |
| Argilophilus papillifer | |
| Argilophilus margaritae | |
| Dendrobaena rubida | |
| Diplocardia californiana | |
| Diplocardia woodi | |
| Diplocardia montana | |
| Dodecaceria fewkesi | Fringed filament worm |
| Eisenia rosea | |
| Eiseniella tetraedra | |
| Lumbricidae juveniles | |
| Microscolex dubius | |
| Sabaco elongatus | Tube worm |
| Glycera americana | American bloodworm |

### Class Polychaeta

| Species | Common name |
| Arctonoe vittata | Scaleworm |
| Dodecaceria fewkesi | Fringed filament worm |
| Dorvillea moniloceras | Candy-striped polychaete |
| Eudistylia polymorpha | Giant feather duster worm |
| Ficopomatus enigmaticus | Australian tubeworm |
| Halosydna brevisetosa | Eighteen-scaled worm |
| Harmothoe inbricata | Fifteen-scaled worm |
| Nereis vexillosa | Pile worm |
| Phragmatopoma californica | California sandcastle worm |
| Poeobius meseres | Balloon worm |
| Serpula columbiana | Red-trumpet tubeworm |
| Spirobranchus spinosus | Panamic Christmas tree worm |
| Urechis caupo | Fat innkeeper worm |

## Arthropoda

Subphylum Crustacea

### Class Branchiopoda
#### Order Anostraca
##### Family Branchinectidae, fairy shrimp

| Species | Common name |
| Branchinecta conservatio | Conservancy fairy shrimp |
| Branchinecta longiantenna | Longhorn fairy shrimp |
| Branchinecta sandiegoensis | San Diego fairy shrimp |
| Branchinecta lynchi | Vernal Pool fairy shrimp |
| Streptocephalus woottoni | Riverside fairy shrimp |
| Pacifastacus fortis | Shasta crayfish, placid crayfish |

#### Order Notostraca tadpole shrimp

| Species | Common name |
| Lepidurus packardi | Vernal pool tadpole shrimp |

#### Order Anomopoda water fleas

| Species | Common name |
| Dumontia oregonensis | Hairy water flea |

### Class Hexanauplia

| Species | Common name |
| Balanus glandula | Pacific acorn barnacle |
| Balanus nubilus | Giant acorn barnacle |
| Chthamalus dalli | Little brown barnacle |
| Dosima fascicularis | Buoy barnacle |
| Lepas pacifica | Pacific gooseneck barnacle |
| Megabalanus californicus | California barnacle |
| Paraconcavus pacificus | Red-striped acorn barnacle |
| Pollicipes polymerus | Gooseneck barnacle |
| Semibalanus cariosus | Thatched barnacle |
| Tetraclita rubescens | Pink volcano barnacle |

### Class Malacostraca
#### Order Decapoda, decapods

| Species | Common name |
| Syncaris pacifica | California freshwater shrimp |
| Neotrypaea californiensis | Bay ghost shrimp |
| Palaemon macrodactylus | Korean shrimp |
| Loxorhynchus grandis | Sheep crab |
| Taliepus nuttallii | Southern kelp crab |
| Loxorhynchus crispatus | Decorator crab |
| Oregonia gracilis | Graceful decorator crab |
| Emerita analoga | Pacific sand crab, pacific mole crab |
| Pachygrapsus crassipes | Striped shore crab |
| Pyromaia tuberculata | Spider crab, tuberculate pear crab |
| Carcinus maenas | European green crab, green crab, green shore crab |
| Eriocheir sinensis | Chinese mitten crab |
| Hemigrapsus oregonensis | Yellow shore crab |
| Rhithropanopeus harrisii | Harris crab |
| Randallia ornata | Globe crab |
| Panulirus interruptus | California spiny lobster |

#### Order Isopoda, isopods

| Species | Common name |
| Bathynomus giganteus | Giant isopod |
| Elthusa californica | |
| Elthusa vulgaris | |
| Synidotea laevidorsalis | |

#### Suborder Oniscidea, woodlice

| Species | Common name |
| Alloniscus mirabilis Stuxberg, 1875 | |
| Alloniscus perconvexus Dana, 1856 | |
| Cubaris affinis Dana, 1854 | |
| Cubaris californica Budde-Lund, 1885 | |
| Venezillo arizonicus Mulaik and Mulaik, 1942 | |
| Venezillo microphthalmus Arcangeli, 1932 | |
| Armadillidium vulgare Latreille, 1804 | Common pill-bug, common pill woodlouse, roly-poly, potato bug, slater, doodle bug |
| Armadilloniscus coronacapitalis Menzies, 1950 | |
| Armadilloniscus holmesi Arcangeli, 1933 | |
| Armadilloniscus lindahli Richardson, 1905 | |
| Detonella paillicornis Richardson, 1904 | |
| Ligia pallasii Brandt, 1833 | Rock louse |
| Ligidium gracile Dana, 1856 | |
| Ligidium latum Jackson, 1923 | |
| Oniscus asellus Linnaeaus, 1758 | Common woodlouse |
| Littorophiloscia richardsonae Holmes & Gay, 1909 | |
| Niambia capensis Dollfus, 1895 | |
| Platyarthrus aiasensis Legrand, 1953 | |
| Porcellio dilatatus Brandt, 1833 | |
| Porcellio laevis Latreille, 1804 | |
| Porcellio scaber Latreille, 1804 | |
| Porcellionides floria Garthwaite & Sassaman, 1985 | |
| Haplophthalmus danicus Budde-Lund, 1885 | Terrestrial cave isopod |
| Tylos punctatus Holmes & Gay, 1909 | |

#### Order Amphipoda, amphiopods

| Species | Common name |
| Phronima sedentaria | Barrel amphiopod |

### Class Insecta

California has over 30,000 insects in the entire state.

#### Order Coleoptera
##### Family Carabidae, ground beetles

| Species | Common name |
| Cicindela ohlone | Ohlone tiger beetle |
| Elaphrus viridis | Delta green ground beetle |

##### Family Cerambycidae, longhorn beetles

| Species | Common name |
| Desmocerus californicus dimorphus | Valley elderberry longhorn beetle |
| Desmocerus californicus californicus | California elderberry longhorn beetle |

##### Family Scarabaeidae, scarabs

| Species | Common name |
| Polyphylla barbata | Mount Hermon June beetle |
| Polyphylla decemlineata | Ten-lined June beetle |
| Chrysochus cobaltinus | Cobalt milkweed beetle |
| Diabrotica undecimpunctata | Spotted cucumber beetle |

#### Order Dermaptera, earwigs

| Species | Common name |
| Euborellia annulipes | Ring-legged Earwig |
| Forficula auricularia | European earwig, common earwig |
| Labidura riparia | Shore earwig |

#### Order Diptera, flies and mosquitoes

| Species | Common name |
| Ablautus schlingeri | Oso Flaco robber fly |
| Apiocera warneri | Glamis sand fly |
| Brennania belkini | Belkin's dune tabanid fly |
| Efferia antiochi | Antioch efferian robberfly |
| Efferia macroxipha | Glamis robberfly |
| Metapogon hurdi | Hurd's metapogon robberfly |
| Paracoenia calida | Wilbur Springs shore fly |
| Rhaphiomidas terminatus abdominalis | Delhi Sands flower-loving fly |

#### Order Embiidina, webspinners and footspinners

| Species | Common name |
| Haploembia solieri | Bicolored webspinner |
| Haploembia tarsalis | Pink webspinner |
| Oligotoma nigra | Black webspinner |
| Oligotoma saundersii | Saunders' webspinner |

#### Order Hemiptera
##### Family Macroveliidae

| Species | Common name |
| Oravelia pege | Dry Creek cliff strider bug |

##### Family Pentatomidae

| Species | Common name |
| Bagrada hilaris | Bagrada bug |
| Chlorochroa belfragii | Belfragi's chlorochroan Bug |
| Chlorochroa faceta | |
| Chlorochroa kanei | |
| Chlorochroa ligata | Conchuela bug |
| Chlorochroa opuntiae | |
| Chlorochroa rossiana | |
| Chlorochroa sayi | Say's stink bug |
| Chlorochroa uhleri | Uhler's stink bug |
| Cosmopepla conspicillaris | Hedge nettle stink bug |
| Cosmopepla intergressa | |
| Cosmopepla lintneriana | Twice-stabbed stink bug |
| Cosmopepla uhleri | |
| Murgantia histrionica | Harlequin bug |

##### Family Saldidae

| Species | Common name |
| Saldula usingeri | Wilbur Springs shorebug |

#### Order Hymenoptera, sawflies, bees, wasps, and ants

| Species | Common name |
| Apis mellifera | Western honey bee, European honey bee |
| Bombus crotchii | Crotch bumble bee |
| Bombus suckleyi | Suckley cuckoo bumble bee |
| Bombus occidentalis occidentalis | Western bumble bee |
| Bombus franklini | Franklin bumble bee |
| Chalybion californicum | Blue mud wasp, mud dauber |
| Pepsis pallidolimbata | Tarantula hawk |
| Polistes dominula | European paper wasp |
| Sceliphron caementarium | Black and yellow mud dauber |
| Sphex ichneumoneus | Great golden digger wasp |
| Vespula sulphurea | California yellowjacket, western yellowjacket |

#### Order Lepidoptera, butterfiles and moths
##### Family Hesperiidae, skippers

| Species | Common name |
| Pyrgus ruralis lagunae | Laguna Mountains skipper |
| Pyrgus communis | Common checkered skipper |
| Ochlodes sylvanoides | Woodland skipper |
| Ochlodes yuma | Yuma skipper |
| Hylephila phyleus | Fiery skipper |
| Poanes melane | Umber skipper |
| Amblyscirtes vialis | Roadside skipper |
| Atalopedes campestris | Field skipper, sachem |
| Carterocephalus palaemon | Arctic skipper |
| Epargyreus clarus | Silver-spotted skipper |
| Heliopetes ericetorum | Northern white skipper |
| Erynnis propertius | Propertius duskywing |
| Erynnis tristis | Mournful duskywing |
| Erynnis brizo lacustra | Leathery oak duskywing, sleepy duskywing |
| Erynnis funeralis | Funereal duskywing |

##### Family Nymphalidae

| Species | Common name |
| Speyeria zerene behrensii | Behren's silverspot butterfly |
| Speyeria callippe | Callippe fritillary |
| Speyeria callippe callippe | Callippe silverspot butterfly |
| Speyeria zerene myrtleae | Myrtle's silverspot butterfly |
| Speyeria zerene hippolyta | Oregon silverspot butterfly |
| Euphydryas editha bayensis | Bay checkerspot butterfly |
| Euphydryas editha quino | Quino checkerspot |
| Euphydryas chalcedona | Variable checkerspot |
| Vanessa atalanta | Red admiral |
| Vanessa cardui | Painted lady |
| Vanessa annabella | West coast lady |
| Vanessa virginiensis | American lady |
| Nymphalis antiopa | Mourning cloak |
| Nymphalis californica | California tortoiseshell |
| Nymphalis milberti | Milbert's Tortoiseshell |

##### Family Lycaenidae, gossamer-winged butterflies

| Species | Common name |
| Euphilotes enoptes smithi | Smith's blue butterfly |
| Euphilotes battoides allyni | El Segundo blue butterfly |
| Glaucopsyche lygdamus palosverdesensis | Palos Verdes blue butterfly |
| Icaricia icarioides missionensis | Mission blue butterfly |
| Incisalia mossii bayensis | San Bruno elfin butterfly |
| Plebejus idas lotis | Lotis blue butterfly |

##### Family Riodinidae, metalmarks

| Species | Common name |
| Apodemia mormo langei | Lange's metalmark butterfly |
| Apodemia mormo | Mormon metalmark |

##### Family Sphingidae, hawk moths, sphinx moths

| Species | Common name |
| Euproserpinus euterpe | Kern primrose sphinx moth |
| Eumorpha achemon | Achemon sphinx |
| Hyles lineata | White-lined sphinx |

##### Family Papilionidae, hawk moths, sphinx moths

| Species | Common name |
| Battus philenor | Pipevine swallowtail |
| Papilio zelicaon | Anise swallowtail |
| Papilio rutulus | Western tiger swallow |
| Papilio multicaudata | Two-tailed swallowtail |
| Papilio eurymedon | Pale swallowtail |
| Papilio indra | Indra swallowtail |
| Parnassius clodius | Clodius Parnassian |
| Parnassius phoebus behrii | Behr's Parnassian |

#### Order Mecoptera, scorpionflies

| Species | Common name |
| Orobittacus obscurus | Gold rush hanging scorpionfly |

#### Order Odonata, dragonflies and damselflies
##### Suborder Anisoptera

| Species | Common name |
| Aeshna palmata | Paddle-tailed darner |
| Aeshna walkeri | Walker's darner |
| Anax junius | Common green darner |
| Anax walsinghami | Giant darner |
| Cordulegaster dorsalis | Pacific spiketail |
| Erpetogomphus compositus | White-belted spiketail |
| Erpetogomphus lampropeltis | Serpent ringtail |
| Macromia magnifica | Western river cruiser |
| Octogomphus specularis | Grappletail |
| Progomphus borealis | Gray sanddragon |
| Rhionaeschna californica | California darner |
| Rhionaeschna multicolor | Blue-eyed darner |
| Rhionaeschna psilus | Turquoise-tipped darner |
| Stylurus intricatus | Brimstone clubtail |
| Stylurus plagiatus | Russet-tipped clubtail |

###### Family Libellulidae

| Species | Common name |
| Brachymesia furcata | Red-tailed pennant |
| Brechmorhoga mendax | Pale-faced clubskimmer |
| Erythemis collocata | Western pondhawk |
| Erythemis vesiculosa | Great pondhawk |
| Erythrodiplax basifusca | Plateau dragonlet |
| Libellula comanche | Comanche skimmer |
| Libellula composita | Bleached skimmer |
| Libellula croceipennis | Neon skimmer |
| Libellula forensis | Eight-spotted skimmer |
| Libellula luctuosa | Window skimmer |
| Libellula nodisticta | Hoary skimmer |
| Libellula pulchella | Twelve-spotted skimmer |
| Libellula quadrimaculata | Four-spotted skimmer |
| Libellula saturata | Flame skimmer |
| Macrodiplax balteata | Marl pennant |
| Orthemis ferruginea | Roseate skimmer |
| Pachydiplax longipennis | Blue dasher |
| Paltothemis lineatipes | Red rock skimmer |
| Pantala flavescens | Wandering glider |
| Pantala hymenaea | Spot-winged glider |
| Perithemis intensa | Mexican amberwing |
| Plathemis lydia | Common whitetail |
| Plathemis subornata | Desert whitetail |
| Pseudoleon superbus | Filigree skimmer |
| Sympetrum corruptum | Variegated meadowhawk |
| Sympetrum illotum | Cardinal meadowhawk |
| Sympetrum madidum | Red-veined meadowhawk |
| Sympetrum pallipes | Striped meadowhawk |
| Sympetrum vicinum | Autumn meadowhawk |
| Tramea calverti | Striped saddlebag |
| Tramea lacerata | Black saddlebag |
| Tramea onusta | Red saddlebag |

##### Suborder Zygoptera

| Species | Common name |
| Archilestes californicus | California spreadwing |
| Archilestes grandis | Greater spreadwing |
| Hetaerina americana | American rubyspot |
| Lestes congener | Spotted spreadwing |
| Lestes dryas | Emerald spreadwing |
| Lestes stultus | Black spreadwing |

###### Subfamily Coenagrionoidea

| Species | Common name |
| Amphiagrion abbreviatum | Western red damsel |
| Argia agrioides | California dancer |
| Argia alberta | Paiute dancer |
| Argia emma | Emma's dancer |
| Argia hinei | Lavender dancer |
| Argia lugens | Sooty dancer |
| Argia moesta | Powdered dancer |
| Argia nahuana | Aztec dancer |
| Argia sedula | Blue-ringed dancer |
| Argia vivida | Vivid dancer |
| Enallagma annexum | Northern bluet |
| Enallagma basidens | Double-striped bluet |
| Enallagma carunculatum | Tule bluet |
| Enallagma civile | Familiar bluet |
| Enallagma praevarum | Arroyo bluet |
| Ischnura barberi | Dessert forktail |
| Ischnura cervula | Pacific forktail |
| Ischnura denticollis | Black-fronted forktail |
| Ischnura hastata | Citrine forktail |
| Ischnura perparva | Western forktail |
| Ischnura ramburii | Rambur's forktail |
| Telebasis salva | Desert firetail |
| Zoniagrion exclamationis | Exclamation damsel |

#### Order Orthoptera, grasshoppers, katydids, and crickets

| Species | Common name |
| Aglaothorax longipenni | Santa Monica shieldback katydid |
| Ammopelmatus kelsoensis | Kelso jerusalem cricket |
| Arphia behrensi | California sulphur-winged grasshopper |
| Dissosteira pictipennis | California rose-winged grasshopper |
| Stenopelmatus fuscus | Jerusalem cricket |
| Trimerotropis infantilis | Zayante band-winged grasshopper |
| Trimerotropis pallidipennis | Pallid-winged grasshopper |

#### Order Phthiraptera, lice

| Species | Common name |
| Pediculus humanus capitis | Head louse |
| Pediculus humanus corporis | Body louse |
| Pthirus pubis | Pubic louse, crab louse |

#### Order Plecoptera, stoneflies

| Species | Common name |
| Capnia lacustra | Lake Tahoe benthic stonefly |

#### Order Trichoptera caddisflies

| Species | Common name |
| Cryptochia denningi | Denning's cryptic caddisfly |
| Cryptochia excella | Kings Canyon cryptochian caddisfly |
| Cryptochia shasta | Confusion caddisfly |
| Diplectrona californica | California diplectronan caddisfly |
| Ecclisomyia bilera | Kings Creek ecclysomyian caddisfly |
| Farula praelonga | Long-tailed caddisfly |
| Goeracea oregona | Sagehen Creek goeracean caddisfly |
| Lepidostoma ermanae | Cold Spring caddisfly |
| Limnephilus atercus | Fort Dick limnephilus caddisfly |
| Neothremma genella | Golden-horned caddisfly |
| Neothremma siskiyou | Siskiyou caddisfly |
| Parapsyche extensa | King's Creek parapsyche caddisfly |
| Rhyacophila lineata | Castle Crags rhyacophilan caddisfly |
| Rhyacophila mosana | Bilobed rhyacophilan caddisfly |
| Rhyacophila spinata | Spiny rhyacophilan caddisfly |

#### Order Thysanoptera thrips

| Species | Common name |
| Aeolothrips collaris | |
| Aeolothrips fasciatus | Banded thrips |
| Aeolothrips kuwanaii | |
| Caliothrips marginipennis | |
| Erythrothrips arizonae | |
| Erythrothrips keeni | |
| Franklinothrips vespiformis | Vespiform thrips |
| Klambothrips myopori | Naio thrips |
| Liothrips ilex | Toyon gall thrips |
| Heliothrips haemorrhoidalis | Greenhouse thrips |
| Hercinothrips femoralis | |
| Frankliniella occidentalis | Western flower thrips |
| Gynaikothrips uzeli | Weeping fig thrips |
| Echinothrips americanus | |
| Heterothrips salicis | |
| Frankliniella schultzei | Common blossom thrips, cotton thrips |
| Hercinothrips bicinctus | Banana silverling thrips |
| Macrophthalmothrips argus | |
| Neohydatothrips moultoni | |
| Neohydatothrips samayunkur | French marigold thrips |
| Neurothrips magnafemoralis | |
| Orothrips kelloggi | |
| Parthenothrips dracaenae | |
| Rhipidothrips gratiosus | |
| Scolothrips sexmaculatus | |
| Thrips tabaci | Onion thrips |

### Subclass Myriopoda
## Brachiopoda
### Order Stenolaemata Narrow throat bryozoans

* Species
* Crisia occidentalis
* Crisia serrata
* Filicrisia franciscana
* Idmonea californica
* Tubulipora pacifica

### Order Terebratulida

| Species | Common name |
| Laqueus californicus | |
| Terebratalia transversa | North Pacific lampshell |

## Bryozoa
### Class Gymnolaemata

| Species | Common name |
| Amathia distans | |
| Amathia verticillata | Spaghetti bryozoan |
| Anguinella palmata | |
| Antropora tincta | |
| Bugula neritina | Mossy bryozoan, brown bryozoan |
| Bugula pacifica | |
| Bugulina californica | Spiral bryozoan |
| Bugulina stolonifera | |
| Celleporella hyalina | |
| Celleporaria brunnea | |
| Celleporina costazii | |
| Celleporina robertsoniae | Orange bryozoan |
| Conopeum reticulum | Encrusting bryozoan |
| Cryptosula pallasiana | Keyhole bryozoan |
| Dendrobeania lichenoides | |
| Flustrellidra corniculata | Leather bryozoan |
| Flustrellidra spinifera | |
| Hincksina velata | |
| Integripelta bilabiata | Red bryozoan |
| Jellyella tuberculata | Sargassum sea mat |
| Membranipora membranacea | Kelp lace bryozoan |
| Membranipora villosa | Lacy crust bryozoan |
| Pherusella brevituba | |
| Phidolopora pacifica | Lattice-work bryozoan |
| Primavelans insculpta | Northern fluted bryozoan |
| Primavelans mexicana | Southern fluted bryozoan |
| Schizoporella errata | Branching bryozoan |
| Schizoporella unicornis | |
| Thalamoporella californica | |
| Tricellaria occidentalis | |
| Watersipora cucullata | Sub-ovoid bryozoan |
| Watersipora subatra | |
| Watersipora subtorquata | Red-rust bryozoan |

### Class Phylactolaemata freshwater bryozoans

| Species | Common name |
| Cristatella mucedo | |
| Pectinatella magnificia | Magnificent bryozoan |

### Class Stenolaemata

| Species | Common name |
| Diaperoforma californica | Southern staghorn coral |
| Disporella separata | Purple encrusting bryozoan |
| Heteropora pacifica | Northern staghorn bryozoan |
| Patinella radiata | |
| Tubulipora pacifica | |

## Chaetognatha

| Species | Common name |
| Sagitta elegans | |

## Chordata

Subphylum Urochordata

### Class Ascidiacea
#### Order Enterogona

| Species | Common name |
| Aplidium californicum | Sea Pork |
| Aplidium solidum | Red Ascidian, Sea Pork |
| Clavelina huntsmani | |
| Cystodytes lobatus | |
| Didemnum carnulentum | |
| Diplosoma listerianum | |
| Distaplia smithi | |
| Distaplia occidentalis | |
| Eudistoma molle | |
| Eudistoma psammion | |
| Euherdmania claviformis | |
| Polyclinum planum | Elephant ear tunicate |
| Pycnoclavella stanleyi | |
| Ritterella pulchra | |
| Ritterella rubra | |
| Synoicum parfustis | |
| Trididemnum opacum | |
| Ascidia ceratodes | |
| Corella willmeriana | Transparent tunicate, transparent sea squirt, solitary tunicate |
| Ciona savignyi | Pacific transparent sea squirt or solitary sea squirt |
| Perophora annectens | |

#### Order Stolidobranchia

| Species | Common name |
| Botryllus schlosseri | Star tunicate |
| Boltenia villosa | Spiny-headed tunicate, hairy sea squirt, bristly tunicate, stalked hairy sea squirt |
| Cnemidocarpa finmarkiensis | Broad base sea squirt, red sea squirt, shiny orange sea squirt |
| Halocynthia igaboja | Sea hedgehog, bristly tunicate |
| Metandrocarpa taylori | |
| Pyura haustor | Wrinkled seapump |
| Styela montereyensis | Stalked tunicate, Monterey stalked tunicate |
| Styela clava | Leathery sea squirt |
| Branchiostoma californiense | |
| Molgula manhattensis | |
| Botrylloides violaceus | Chain tunicate |
| Botrylloides diegensis | San Diego sea squirt |

#### Order Phlebobranchia

| Species | Common name |
| Ciona intestinalis | |

### Class Thaliacea

| Species | Common name |
| Iasis cylindrica | |

## Cnidaria
### Class Scyphozoa, true jellyfish

| Species | Common name |
| Atolla reynoldsi | Deep-sea crown jelly |
| Aurelia coerulea | Asian moon jelly |
| Aurelia labiata | Moon jelly, greater moon jelly |
| Chrysaora colorata | Purple-striped jelly |
| Chrysaora fuscescens | Pacific sea nettle, West Coast sea nettle |
| Chrysaora achlyos | Black sea nettle, Black jelly |
| Chrysaora placamia | South American sea nettle |
| Cyanea capillata | Lion's mane jellyfish, giant jellyfish |
| Cyanea ferruginea | Pacific lion's mane jelly |
| Phacellophora camtschatica | Egg-yolk jelly |
| Phyllorhiza punctata | Australian spotted jelly |
| Stellamedusa ventana | Bumpy jelly |
| Stygiomedusa gigantea | Giant phantom jelly |

### Class Hydrozoa

| Species | Common name |
| Aequorea victoria | Crystal jelly |
| Colobonema sericeum | Silky jelly |
| Coryne eximia | |
| Erenna sirena | Angler siphonophore |
| Polyorchis haplus | |
| Polyorchis penicillatus | Red-eye medusa |
| Scrippsia pacifica | Giant bell jelly |
| Stauridiosarsia bicircella | |
| Velella velella | By-the-wind-sailor, sea raft, little sail |

### Class Anthozoa, sea anemones and corals
#### Order Actiniaria

| Species | Common name |
| Anthomastus ritteri | Mushroom soft coral |
| Anthopleura artemisia | Moonglow anemone |
| Anthopleura elegantissima | Aggregating anemone |
| Anthopleura hermaphroditica | Small brown sea anemone |
| Anthopleura mariae | |
| Anthopleura sola | Sunburst anemone, starburst anemone |
| Anthopleura xanthogrammica | Giant green anemone, green surf anemone |
| Balanophyllia elegans | Orange cup coral |
| Cribrinopsis albopunctata | White-spotted rose anemone |
| Diadumene lineata | Orange-striped green anemone |
| Metridium senile | Plumose anemone |
| Urticina clandestina | Pacific stubby rose anemone |
| Urticina columbiana | Sand rose anemone |
| Urticina grebelnyi | Painted anemone |
| Urticina mcpeaki | McPeak's anemone |
| Urticina piscivora | Fish-eating anemone |

#### Order Pennatulacea

| Species | Common name |
| Ptilosarcus gurneyi | Orange sea pen |
| Renilla amethystina | |
| Renilla koellikeri | |
| Stylatula elongata | Slender sea pen |
| Virgularia mirabilis | Slender sea pen |

## Ctenophora
### Class Tentaculata tentaculate comb jellies

| Species | Common name |
| Bolinopsis microptera | Canadian comb jelly |
| Deiopea kaloktenota | |
| Euplokamis dunlapae | |
| Hormiphora californensis | |
| Kiyohimea usagi Matsumoto & Robison, 1992 | |
| Lampocteis cruentiventer | Bloody-belly comb jelly |
| Leucothea pulchra | |
| Pleurobrachia bachei | Pacific sea gooseberry |
| Pleurobrachia pileus | Sea gooseberry |

### Class Nuda

| Species | Common name |
| Beroe abyssicola | Abyssal comb jelly |
| Beroe cucumis | Northern comb jelly |
| Beroe forskalli | |
| Beroe ovata | Brown comb jelly |

## Echinodermata
### Class Asteroidea, sea stars

| Species | Common name |
| Astrometis sertulifera | Fragile rainbow star |
| Astropecten armatus | Spiny sand star |
| Astropecten verrilli | California sand star |
| Dermasterias imbricata | Leather star |
| Henricia leviuscula | Pacific blood star |
| Henricia pumila | Dwarf mottled henricia |
| Leptasterias hexactis | Six-rayed star |
| Linckia columbiae | Tamarisk sea star |
| Mediaster aequalis | Vermilion star |
| Orthaserias koehleri | Rainbow star |
| Patiria miniata | Bat star |
| Pisaster brevispinus | Pink sea star, Giant pink sea star, Pink bay star |
| Pisaster giganteus | Knobby sea star, giant spined star |
| Pisaster ochraceus | Ocher sea star |
| Pycnopodia helianthoides | Sunflower sea star |

### Class Ophiuroidea, brittle stars

| Species | Common name |
| Amphiodia occidentalis | Brittle star, long-armed brittle star |
| Amphiodia akosmos | |
| Amphiodia occidentalis | Long-armed brittle star |
| Amphiodia urtica | Burrowing brittle star |
| Amphipholis squamata | Dwarf brittle star |
| Amphiura acystata | |
| Gorgonocephalus eucnemis | Common basket star |
| Ophiactis savignyi | Little six-arm brittle star, Savignyi's brittle star |
| Ophioderma panamense | Panama serpent star |
| Ophioncus granulosus | |
| Ophionereis annulata | Banded brittle star |
| Ophionereis diabloensis | |
| Ophiopholis aculeata | Daisy brittle star, crevice brittle star |
| Ophiopholis kennerlyi | Daisy brittle star |
| Ophioplocus esmarki | Esmark's brittle star |
| Ophiopsila californica | |
| Ophiopteris papillosa | Flat-spined brittle star |
| Ophiothrix rudis | Rough banded brittle star |
| Ophiothrix spiculata | Western spiny brittle star |
| Ophiura luetkenii | Grey brittle star |

### Class Echinoidea, sea urchins and sand dollars

| Species | Common name |
| Agassizia scrobiculata | |
| Arbacia stellata | Black starry sea urchin |
| Brissus obesus | |
| Centrostephanus coroatus | Crowned sea urchin |
| Dendraster excentricus | Eccentric sand dollar |
| Lovenia cordiformis | Heart urchin |
| Lytechinus pictus | White sea urchin |
| Mesocentrotus franciscanus | Red sea urchin |
| Strongylocentrotus droebachiensis | Green sea urchin |
| Strongylocentrotus fragilis | Fragile sea urchin |
| Strongylocentrotus purpuratus | Purple sea urchin |

## Gastrotricha
### Order Chaetonotida

| Species | Common name |
| Chaetonotus cordiformis | |

### Order Macrodasyida

| Species | Common name |
| Paraturbanella solitaria Todaro, M. A. | Gastrotich |
| Urodasys anorektoxys Todaro & Hummon, 2000 | Gastrotich |

## Loricifera
### Order Nanaloricida

| Species | Common name |
| Rugiloricus californiensis | |

## Mollusca
### Class Bivalvia, bivalves
#### Order Mytilida

| Species | Common name |
| Adula californiensis | California datemussel |
| Adula diegensis | San Diego datemussel |
| Adula gruneri | Curved datemussel |
| Arcuatula senhousia | Asian date mussel, Asian mussel, Bag mussel |
| Brachiodontes adamsianus | Adams mussel |
| Geukensia demissa | Atlantic ribbed marsh mussel, ribbed horsemussel |
| Leiosolenus plumula | Feather datemussel |
| Limnoperna fortunei | Golden mussel |
| Modiolatus neglectus | Neglected horsemussel |
| Modiolus capax | Fat horsemussel |
| Modiolus modiolus | Northern horsemussel |
| Modiolus rectus | Straight horsemussel |
| Musculista senhousia | Green mussel |
| Mytilisepta bifurcata | Bifurcate mussel |
| Mytilus californianus | California mussel |
| Mytilus edulis | Blue mussel, Common mussel |
| Mytilus galloprovincialis | Mediterranean mussel |
| Mytilus trossulus | Bay mussel, foolish mussel |

#### Order Ostreida

| Species | Common name |
| Ostrea lurida | Olympia oyster |
| Crassostrea virginica | Eastern oyster, American oyster, Atlantic oyster |
| Crassostrea gigas | Pacific oyster, Japanese oyster, Miyagi oyster |

#### Order Venerida

| Species | Common name |
| Gemma gemma | Gem clam |
| Pseudochama exogyra | Jewel box clam, reversed chama |
| Ruditapes philippinarum | Japanese littleneck |

#### Order Myida

| Species | Common name |
| Mya arenaria | Atlantic softshell clam |
| Potamocorbula amurensis | Overbite clam, Asian clam |

### Class Gastropoda, gastropods
#### Order Archaeogastropoda

| Species | Common name |
| Haliotis sorenseni | White abalone |
| Haliotis cracherodii | Black abalone |
| Lottia gigantea | Owl limpet |
| Lottia scabra | Rough limpet |
| Megathura crenulata | Giant keyhole limpet |
| Fissurella volcano | Volcano limpet |

#### Order Pulmonata

| Species | Common name |
| Helminthoglypta walkeriana | Banded Dune Snail, Morro shoulderband |
| Monadenia infumata | Redwood sideband snail |
| Monadenia setosa | Trinity bristle snail |

#### Order Stylommatophora

| Species | Common name |
| Ariolimax buttoni | Button's banana slug |
| Ariolimax californicus | California banana slug |
| Ariolimax columbianus | Pacific banana slug |
| Ariolimax dolichophallus | Slender banana slug |
| Lehmannia valentiana | Three-banded garden slug, Valencia slug, greenhouse slug |
| Deroceras invadens | Tramp slug |
| Deroceras reticulatum | Gray field slug, milky slug |
| Arion hortensis | Garden slug |
| Milax gagates | Greenhouse slug, jet slug |
| Cornu aspersum (formerly named Helix aspersa | Garden snail, European garden snail, brown garden snail |
| Oxychilus cellarius | Cellar glass snail |

#### Order Nudibranchia

| Species | Common name |
| Coryphella trilineata | Three-lined aeolid |
| Diaulula sandiegensis | Dorid Nudibranch, San Diego dorid |
| Doris montereyensis | Monterey dorid |
| Flabellinopsis iodinea | Spanish shawl |
| Hermissenda crassicornis | Thick-horned nudibranch |
| Hermissenda opalescens | Opalescent nudibranch |
| Okenia rosacea | Hopkin's rose |
| Peltodoris nobilis | Noble dorid |
| Phidiana hiltoni | Hilton's aeolid |
| Sakuraeolis enosimensis | |
| Triopha catalinae | Clown dorid |
| Triopha machulata | Spotted dorid |

#### Order Neotaenioglossa

| Species | Common name |
| Crepidula adunca | Hooked slipper snail |
| Crepidula convexa | Convex slipper snail |
| Crepidula plana | Eastern white slipper snail |

#### Order Neogastropoda

| Species | Common name |
| Busycotypus canaliculatus | Channeled whelk |
| Californiconus californicus | California cone |
| Callianax alectona | Beatic dwarf olive snail |
| Callianax biplicata | Purple olive snail |
| Callianax strigata | |
| Ceratostoma foliatum | Leafy hornmouth |
| Ilyanassa obsoleta | Eastern mud snail |
| Kelletia kelletii | Kellet's whelk |
| Olivella pedroana | San Pedro dwarf olive snail |
| Pteropurpura festiva | Festive murex |
| Urosalpinx cinerea | Atlantic oyster drill |

#### Order Trochida

| Species | Common name |
| Angaria delphinus | Lacinate dolphin shell |
| Calliostoma annulatum | Jeweled top snail |
| Calliostoma canaliculatum | Channeled topsnail |
| Calliostoma gemmulatum | Western gem topshell |
| Calliostoma gloriosum | Glorious topsnail |
| Calliostoma ligatum | Blue-ringed top snail, Blue top snail |
| Calliostoma supragranosum | Granulose topsnail |
| Calliostoma tricolor | Three-colored top snail |
| Eulithidium comptum | |
| Eulithidium pulloides | Sullied pheasant |
| Eulithidium rubrilineatum | |
| Gigahomalopoma luridum | Dall's dwarf turban |
| Halistylus pupoideus | |
| Homalopoma baculum | Berry dwarf-turban |
| Homalopoma radiatum | |
| Liotia fenestrata | |
| Margarites pupillus | Puppet margarite |
| Megastraea undosa | Wavy turban |
| Megastraea turbanica | Turban star shell |
| Norrisia norrisii | Kelp snail, Norris's topsnail |
| Parviturbo acuticostatus | |
| Pomaulax gibberosus | Red turban snail |
| Tegula aureotincta | Glided tegula |
| Tegula brunnea | Brown turban snail |
| Tegula eiseni | Western banded tegula |
| Tegula funebralis | Black turban snail, black tegula |
| Tegula gallina | Speckled tegula |
| Tegula montereyi | Monterey tegula |
| Tegula pulligo | Dusky tegula |
| Tegula regina | Queen tegula |

#### Order Littorinimorpha

| Species | Common name |
| Dodecaceria fewkesi | Tube snail |
| Littorina planaxis | Eroded periwinkle |

#### Superfamily Aplysioidea

| Species | Common name |
| Aplysia californica | California sea hare, California brown sea hare |
| Aplysia vaccaria | Black sea hare |

#### Order Cephalaspidea, shieldheaded slugs

| Species | Common name |
| Acteocina cerealis | |
| Acteocina culcitella | |
| Acteocina harpa | |
| Acteocina inculta | |
| Aglaja ocelligera | Spotted aglaja |
| Bulla gouldiana | Cloudy bubble snail |
| Cylichna diegensis | |
| Diaphana californica | California diaphana |
| Gastropteron pacificum | Pacific batwing seaslug |
| Haminoea vesicula | Blister glassy-bubble |
| Haminoea virescens | Green bubble snail |
| Haloa japonica | Japanese bubble snail |
| Melanochlamys diomedea | Albatross aglaja |
| Navanax inermis | California aglaja |
| Navanax polyalphos | |
| Philine auriformis | New Zealand tortellini snail |
| Philine orientalis | Oriental tortellini snail |

#### Superfamily Cerithioidea

* Species
* Alabina barbarensis Bartsch, 1911
* Alabina californica Dall & Bartsch, 1901
* Alabina hamlini Bartsch, 1911
* Alabina monicenis Bartsch, 1911
* Alabina phanea Bartsch, 1911
* Alabina tenuisculpta Bartsch, 1911

### Class Cephalopoda, cephalopods
#### Subclass Coleoidea

| Species | Common name |
| Abraliopsis falco Young, 1972 | |
| Bathyteuthis berryi Roper, 1968 | |
| Chiroteuthis calyx Young, 1972 | |
| Cirroteuthis macrope Berry, 1911 | Vampire squid |
| Eledonella heathi Berry, 1911 | |
| Galiteuthis phyllura Berry, 1911 | Cockatoo squid |
| Gonatus californiensis Young, 1972 | |
| Gonatus onyx Young, 1972 | Clawed armhook squid, black-eyed squid |
| Gonatus pyros Young, 1972 | fiery gonate squid, fiery armhook squid |
| Loligo opalescens | Inshore opalescent squid, market squid |

##### Order Octopoda

| Species | Common name |
| Argonauta argo | Greater argonaut |
| Enteroctopus dofleini | Giant Pacific octopus |
| Haliphron atlanticus | Seven-armed octopus |
| Octopus bimaculatus | Verrill's two-spot octopus |
| Octopus bimaculoides | Two-spot octopus, lesser two-spot octopus |
| Octopus micropyrsus | California's lilliput octopus |
| Octopus rubescens | East Pacific red octopus, red octopus |

#### Order Myopsida

| Species | Common name |
| Doryteuthis opalescens | Opalescent inshore squid |

### Class Polyplacophora

| Species | Common name |
| Acanthochitona imperatrix Watters, 1981 | |
| Acanthopleura fluxa Carpenter, 1864 | |
| Cryptochiton stelleri | Gumboot chiton |
| Cyanoplax hartwegii | Hartweg's chiton |
| Katharina tunicata | Black leather chiton |
| Lepidozona cooperi | Cooper's chiton |
| Mopalia lignosa | Woody chiton |
| Mopalia muscosa | Mossy chiton |
| Nuttallina californica | California spiny chiton |
| Nuttallina fluxa | Spiny chiton |
| Stenoplax conspicua | Conspicuous chiton |
| Tonicella lineata | Lined chiton |
| Tonicella lokii | Flame lined chiton |

## Nematoda

* Species
* Acanthonchus viviparus
* Cyatholaimus jollaensis
* Deontostoma arcticum
* Deontostoma demani
* Dorylaimopsis perfecta
* Gomphionema fellator
* Microlaimus macrolaimus
* Microlaimus macrolaimus
* Paracanthonchus mortenseni
* Paracanthonchus paramacrodon
* Seuratiella californica
* Seuratiella duplex
* Seuratiella pedroensis
* Skrjabinoclava hartwichi
* Synonema californicum

## Nemertea
### Class Anopla

* Species
* Cerebratulus albifrons
* Cerebratulus lineolatus Coe, 1905
* Cerebratulus marginatus

### Class Enopla

* Species
* Carcinonemertes errantia Wickham, 1978
* Carcinonemertes kurisi Sadeghian & Santos, 2010
* Carcinonemertes wickhami
* Chunianna opaca Coe, 1954
* Chunianna pacifica Coe, 1954
* Chuniella tenella Coe, 1954
* Cuneonemertes elongata Coe, 1954
* Cuneonemertes obesa Coe, 1945
* Dichonemertes hartmanae Coe, 1938
* Malacobdella macomae Kozloff, 1991
* Paradinonemertes macrostomum Coe
* Poseidonemertes collaris Roe & Wickham, 1984
* Acanthobothrium unilateralis Alexander, 1953
* Tubonemertes aureola Coe, 1954

### Class Hoplonemertea

| Species | Common name |
| Amphiporus formidabilis | |
| Argonemertes dendyi | |
| Emplectonema viride | |
| Geonemertes pelaenis | |
| Leptonemertes chalicophora | |
| Nipponnemertes bimaculata | Chevron ribbon worm |
| Nipponnemertes punctatula | |
| Paranemertes peregrina | Purple ribbon worm |
| Prosadenoporus floridensis | |
| Quasitetrastemma nigrifrons | |

### Class Palaeonemertea

| Species | Common name |
| Tubulanus frenatus | |
| Tubulanus ruber | |
| Tubulanus sexlineatus | Six-lined ribbon worm |

### Class Pilidiophora

| Species | Common name |
| Baseodiscus delineatus | |
| Baseodiscus punnetti | |
| Euborlasia nigrocincta | |
| Lineus pictifrons | |
| Micrura verrilli | Reticulated purple ribbon worm |

## Phoronida

* Species
* Phoronis ijimai
* Phoronopsis californica
* Phoronopsis harmeri

## Platyhelminthes
### Class Cestoda

| Species | Common name |
| Acanthobothrium brachyacanthum Riser, 1955 | |
| Acanthobothrium goldsteini Appy & Dailey, 1973 | |
| Acanthobothrium hispidum Riser, 1955 | |
| Acanthobothrium holorhini Alexander, 1953 | |
| Acanthobothrium maculatum Riser, 1955 | |
| Acanthobothrium microcephalus | |
| Acanthobothrium olseni Dailey & Mudry, 1968 | |
| Acanthobothrium parviuncinatum Young, 1954 | |
| Acanthobothrium rhinobati Alexander, 1953 | |
| Acanthobothrium robustum Alexander, 1953 | |
| Acanthobothrium unilateralis Alexander, 1953 | |
| Dipylidium caninum | Flea tapeworm, Cucumber tapeworm, Double-pored tapeworm |
| Phoronopsis californica | |
| Phoronopsis harmeri | |

### Class Turbellaria

| Species | Common name |
| Collastoma pacifica Kozloff | |
| Dendrocoelopsis hymanae Kawakatsu | |
| Nexilis epichitonius Holleman & Hand | |
| Notocomplana acticola | Flatworm |
| Phagocata nivea tahoena Kawakatsu | |
| Plehnia caeca Hyman, 1953 | |
| Polycelis monticola Kenk & Hampton | |
| Polycelis sierrensis Kenk, 1973 | |
| Polychoerus carmelensis Costello & Costello | |
| Sphalloplana californica Kenk, 1977 | |

## Porifera
### Class Demospongiae

| Species | Common name |
| Halichondria bowerbanki | Yellow sponge, yellow sun sponge |
| Clathria prolifera | Red beard sponge |
| Tethya aurantia | Orange puffball sponge |
| Oscarella carmela | Slime sponge |
| Plakina bioxea | |

### Subclass Tetractinomorpha
#### Order Astrophorida

| Species | Common name |
| Dercitus syrmatitus | |
| Geodia agassizii | |
| Geodia breviana | |
| Geodia gibberosa | White encrusting sponge |
| Geodia mesotriaena | |
| Geodia mesotrianella | |
| Geodia ovis | |
| Geodia robusta megasterra | |
| Penares cortius | |
| Penares saccharis | |
| Poecillastra rickettsi | |
| Poecillastra tenuilaminaris | |
| Sidonops angulata | |
| Stelletta clarella | |
| Stelletta estrella | |
| Stoeba syrmatitus | |

#### Order Hadromerida

| Species | Common name |
| Cliona californiana | Yellow boring sponge, sulphur sponge |
| Polymastia pachymastia | |
| Polymastia pacifica | |
| Protosuberites sisyrnus | |
| Rhizaxinella gadus | |
| Spheciospongia confoederata | |
| Suberites latus | |
| Suberites suberea | |
| Tethya californiana | |
| Timea authia | |

#### Order Spirophorida

| Species | Common name |
| Craniella arb | |
| Tetilla mutabilis | |

### Subclass Ceractinomorpha, demosponges
#### Order Poecilosclerida

* Species
* Acarnus erithacus
* Artemisina archegona
* Cyamon catalina
* Cyamon koltuni
* Cyamon neon
* Iophon lamella
* Iophon rayae

#### Suborder Myxillina

* Species
* Acanthancora cyanocrypta
* Isodyctya quatsinoensis
* Phorbas californiana
* Phorbas hoffmani
* Plocamionida lyoni

## Rotifera

| Species | Common name |
| Brachionus quadridentatus | |
| Brachionus variabilis | |
| Colurella uncinata | |
| Dicranophoroides caudatus | |
| Genus Lecane | |
| Genus Lepadella | |
| Genus Mytilina | |
| Otostephanos donneri | |
| Philodina acuticornis | |
| Philodina megalotrocha | |
| Philodina roseola | Common Rotifer |
| Philodina rugosa | |
| Platyias quadricornis | |
| Rotaria rotatoria | |
| Rotaria tardigrada | |
| Genus Squatinella | |
| Stephanoceros fimbriatus | |

## Sipuncula

| Species | Common name |
| Apionsoma murinae Cutler, 1969 | |
| Dendrostoma perimeces Fisher, 1928 | |
| Dendrostoma petraeum Fisher, 1928 | |
| Dendrostomum dyscritum Fisher, 1952 | |
| Phascolosoma agassizii | Pacific Peanut Worm |
| Sipunculus nudus | |
| Themiste dyscrita | |
| Themiste hennahi | |
| Themiste pyroides | |

## Tardigrada
### Class Heterotardigrada

* Species
* Batillipes gilmartini McGinty, 1969
* Echiniscoides sigismundi Schultze, 1865
* Echiniscus becki Schuster & Grigarick, 1966
* Echiniscus blumi Richters, 1903
* Multipseudechiniscus raneyi Grigarick et al., 1964