Giraffes have long necks, which they use to browse the leaves of trees. They also have slightly elongated forelegs, about 10% longer than their hind legs. Like nearly all mammals, a giraffe has seven neck vertebrae, which are extremely. elongated.
A crustacean is an organism that belongs to the Kingdom Animalia, Phylum Arthropoda, and in the class Crustacea. Examples of the organisms belonging to this class are lobsters, woodlice, krill, shrimp, barnacles, crayfish, and crabs.
â¢ CRUSTACEAN (noun). The noun CRUSTACEAN has 1 sense: 1. any mainly aquatic arthropod usually having a segmented body and chitinous exoskeleton. Familiarity information: CRUSTACEAN used as a noun is very rare. â¢ CRUSTACEAN (adjective). The adjective CRUSTACEAN has 1 sense: 1. of or belonging to the class Crustacea. Familiarity information: CRUSTACEAN used as an adjective is very rare.