Animal Adaptations in the Ocean Biome

Crustaceans

Mollusks

Mantle

Cephalopods

Gastropods

Bivalves

Cnidarians

"belly foot"

lung development

move by jet propulsion

ability to live on land

hinged, two part shell

Siphon allows them to draw in water to feed

Specialized eye, focuses on light

Polychaetes

Jaw hardened with chitin for feeding

Head has tentacles that allows it to capture food

Gills

two pairs of antennae

exoskeleton hardened by calcium

Some have adapted to living on land

Crabs are able to keep gills damp and minimize water loss to breathe on land

posses cnidocytes, which helps them to capture prey

nematocyst

nerve net

can alter shape of body

secretes mucous, which allows it to move across abrasive surfaces on land