Definitions
A flesh-eater
Carnivore
The smallest crab, only 1/4 inch long; hides inside the shell of a live clam or oyster
Pea crab
A plant-eater
A spiny-skinned invertebrate with five or more rays and two rows of tube feet
Sea star or starfish
A bowl-shaped invertebrate with stinging tentacles
Jellyfish
One shelled mollusks, such as a snail, conch, or cowrie
Univalves
A crab of the eastern U.S. popular as seafood
Blue crab
Mollusks with two matching shells joined by hinges, such as the mussel, oyster, clam, or scallop
Bivalves
It burrows through the soil, swallowing it and leaving behind enriched soil
Earthworm
An invertebrate encased in a thin, rigid shell and protected by spines; it moves on tube feet
Sea urchin
An arthropod with a hard, crusty shell
Crustacean
A sand-colored, burrowing crab of Atlantic and Caribbean beaches
Ghost crab
A group of soft-bodied invertebrates that includes clams, oysters, snails, and squids
Mollusks
A parasitic worm that feeds on the blood of the host animal it has attached itself to
Leech
An invertebrate with a flowerlike appearance; covered with stinging tentacles
Sea anemone
The growing back of a lost body part
Regeneration
An Alaskan crab popular as seafood
King crab
Leglike limbs on the underside of a lobster's abdomen that help the lobster move
Swimmerets
A parasitic worm that grows inside the intestines of a host and robs it of nutrients
Tapeworm
An invertebrate that builds a limestone cup at the base of its tubelike body; most live in large colonies
Coral polyp
A mollusk such as a snail or slug that has a muscular foot that is used to slide forward on a layer of slime
Gastropod
Weighing up to 40 pounds, with 5-foot-long legs
Japanese spider crab
A group of mollusks in which the foot and head are combined into a single headlike structure
Cephalopods
A parasitic worm that lives in the muscles, intestines, or lymph nodes of its host and takes its nourishment from the host's blood and partially digested food
Roundworm
A tiny freshwater invertebrate with tentacles around its mouth