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.
Page 1 â Crustaceans â bugs of the sea. Crabs and crayfish are crustaceans, a subdivision of arthropods â the large group of animals without backbones (invertebrates) that includes insects, spiders, mites, scorpions and springtails.Arthropods have jointed legs and a hard outer shell that acts as a skeleton.rabs and crayfish are crustaceans, a subdivision of arthropods â the large group of animals without backbones (invertebrates) that includes insects, spiders, mites, scorpions and springtails.