schaaldier

marine crustaceans with feathery food-catching appendages; free-swimming as larvae; as adults form a hard shell and live attached to submerged surfaces

any of several edible marine crustaceans of the families Homaridae and Nephropsidae and Palinuridae

small soft-bodied marine crustaceans living in cast-off shells of gastropods

small slender-bodied chiefly marine decapod crustaceans with a long tail and single pair of pincers; many species are edible

shrimp-like decapod crustacean having two pairs of pincers; most are edible

shrimp-like planktonic crustaceans; major source of food for e.g. baleen whales

minute freshwater crustacean having a round body enclosed in a transparent shell; moves about like a flea by means of hairy branched antennae

minute free-swimming freshwater copepod having a large median eye and pear-shaped body and long antennae used in swimming; important in some food chains and as intermediate hosts of parasitic worms that affect man e.g. Guinea worms