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.
Zooplankton /ËzoÊ.ÉËplaeÅktÉn/ ÉËplÃ¦ÅktÉn are (heterotrophic sometimes) detritivorous. Plankton plankton are organisms drifting in, oceans, seas and bodies of fresh. watert includes holoplanktonic organisms whose complete life cycle lies within the plankton, as well as meroplanktonic organisms that spend part of their lives in the plankton before graduating to either the nekton or a sessile, benthic existence.