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.
Crustaceans are different from other arthropods because of their limbs which are parted into two, their larval stages, and the modification of the appendages. Characteristics and Structures Crustaceans have three body parts, the head and thorax are fused to form a cephalothorax, and the abdomen.