### animal | arthropod | crustacean | isopod | slater:

Pill bug
* Most pill bugs eat decay plants
  * look like gray pills. The pill bug's abdomen has seven segments. Pill bugs have flat bodies. The pill bug has three basic body parts called the head, thorax, and abdomen, and they can be many sizes.
  * have two sets of antennae. One of the sets is visible to see. The thorax holds the legs. The abdomen holds the exopods of uropods is attached to some crustaceans' abdomen. Pillbugs eat rotten plants, rotten animals, old garbage, and even bits of food in animal dung. Because of this, they need to be in a damp place or they will die
* are common land isopods that are similar to many marine species
  - less than an inch long
* derive their moisture from their food, so a water dish is unnecessary.
* look similar to sow bugs, but roll up in a ball when disturbed.
* prefer apples to lettuce.
* roll into a small ball when disturbed.

Terrestrial isopod
* are crustaceans that have adapted to living life on land.
* have some requirements left over from their aquatic, crustacean ancestry.

### animal | arthropod | crustacean:

Ostracod
* Most ostracods are bottom dwelling, but there are a few pelagic species
  - minute, several mm or less in length
  - much smaller
* Some ostracods only make their homes in forested country that has fresh water.
* are also persistently present throughout
  - free-swimming scavengers
  - microscopic bivalved crustaceans that are common in most type of water
  - small crustaceans that live inside bivalved shells
  - small, bivalve crustaceans that can inhabit underwater caves
* can be carnivores, herbivores, scavengers, and filter feeders.
* shed their tiny bivalved carapace at least nine times during their growth stages.

Small crustacean
* are also an essential part of their diet.
* competes with small fish for food and reproduces rapidly.

Stomatopod
* are crustaceans
  - widely-used as an effective way to measure the health of coral reefs
* feed on small crustaceans, like hermits.
* have the most sophisticated visual system in the world.
* possess exceptionally large compound eyes, mounted on stalks
  - the most highly developed eyes of all crustaceans

Water flea
* Some water fleas lose functions
  - motor functions
* beat their wings which circulates the water.
* is eaten by small fish, second intermediate host.
* reproduce sexually only every few generations.

### animal | arthropod:

Decapod
* Many decapods are scavengers they eat dead plants and animals
  - use visual and even auditory signals to communicate with one another
* Most decapods are marine, but some shrimp, a few crabs and all crayfish live in fresh water
  - eat plants
  - emerge to feed only at night when fewer predatory fishes are active
* Most decapods have abdomens
* Most decapods maintain functional integrity
* Some decapods have ability
  - body size
  - predators
  - salinity
* Some decapods have similar body size
  - possess legs
* are also the largest crustaceans in size
  - egg-laying invertebrates, mainly with seperate sexes
  - important prey items for many fish, waterfowl, and aquatic mammals
  - preyed upon by a variety of predators from alligators to fishes
  - sexually dimorphic
* can have as many as twenty apendages, arranged in one pair per body segment.
* exhibit many complex and even spectacular behaviors
  - tremendous diversity in shape, size, and color
* have a breaking point at the base of each leg
  - two pairs of antennae, as do all crustaceans
* includes brains
  - carapaces
  - cell membranes
  - cells
  - corpi
  - cytoplasm
  - ears
  - faces
  - heads
  - nuclei
  - pincers
  - plasma membranes
  - sections
  - skulls
  - thoraxes
  - vacuoles