### animal | mollusc | bivalve | oyster:

Blue point
* are low concentrations below normal soil values.
* is an oyster

Eastern oyster
* Some Eastern oysters produce pearls as well.
* are somewhat fatty, with a sealike flavor that ranges from mildly to very salty.
* can reach sexual maturity at four months old.
* grow to three to five inches in length, but can reach a length of eight inches.

Larger oyster
* are probably females while the small ones are males.
* produce more gametes than smaller oysters.

Pacific oyster
* Most pacific oysters live in water.
* Some pacific oysters contain proteins
  - exhibit phenomena
* are the dominant type of oyster produced in Washington.
* exhibit the unusual phenomenon of sex reversal.

Pearl oyster
* are used for commercial production of pearls.
* breed around the island seabed.

Raw oyster
* Some raw oysters carry bacteria.
* are also common
  - safe for consumption as long as they are harvested from beds deemed safe
* can contain harmful bacteria.

Water bivalve
* develop methods.
* retain moisture
  - precious moisture

### animal | mollusc:

Cuttlefish
* All cuttlefish are dioecious, i.e., the sexes are separate.
* Most cuttlefish live to about two years.
* Most cuttlefishs eat molluscs
  - small molluscs
* Most cuttlefishs have brain size
  - brains
  - develop brains
  - diameters
  - eyesights
  - fins
  - good eyesights
  - hearts
  - internal structures
  - lifespans
  - long tentacles
  - prey
  - shells
  - short lifespans
  - sticky tentacles
  - tongues
  - hide from predators
* Most cuttlefishs live in environments
  - marine environments
  - reefs
  - shallow reefs
  - water
* Most cuttlefishs occur in tropical water
  - possess bodies
  - see light
* Most cuttlefishs use mantle muscles
  - strong muscles
* Some cuttlefishes flash two large, black spots resembling eyes, perhaps to fool potential predators.
* Some cuttlefishs are harvested for meat
  - belong to families
* Some cuttlefishs change color
  - skin color
  - display stun color
  - fill chambers
* Some cuttlefishs have ability
  - diagnoses
  - ink
  - internal skeletons
  - types
* Some cuttlefishs hide electric fields
* Some cuttlefishs reach maturity
  - release brown pigment
  - rely on eyesights
  - spread arms
* Some cuttlefishs use beaks
  - cavities
  - color patterns
  - mantle cavities
* are cephalopods.
* can sense movement in other ways as well.
* change shapes.
* do eat a lot, but like most marine creatures they can be overfed.
* includes brains
  - carapaces
  - cell membranes
  - cells
  - corpi
  - cytoplasm
  - faces
  - heads
  - nuclei
  - plasma membranes
  - sections
  - shellfishes
  - skulls
  - vacuoles
* is dense with vital minerals.
  - the Mediterranean Sea and eastern Atlantic from England to North Africa
* spray water.
* squirt out a cloud of black ink, turn pale and swim fast away from the ink.
+ Defence against predators, Secondary defences, Methods: Co-evolution :: Ecology
  * Many offer a non-essential part of the body, for example, butterflies whose wings have small 'targets' near the edges. Cuttlefish squirt out a cloud of black ink, turn pale and swim fast away from the ink. The Kentish Plover, which lays its eggs on the ground, lures attackers away from the eggs. It uses a remarkable impression of being damaged with a broken wing.

### animal | mollusc | cuttlefish:

Common cuttlefish
* eat mainly crustaceans and small fishes.
* have no shell but an internal skeleton of chalky material.
* reproduce sexually and have achieved reproductive success.