Male sharks have claspers. In classification, a class is a group of related or similar organisms. A class contains one or more orders. A group of similar classes forms a phylum. The classification of organisms helps in the their study.
Many reptiles are ectothermic.
Most sharks are cold-blooded, only a few, like the Mako and the Great white shark can raise their temperature above that of the water. The two animals are called commensals. Commensalism is a type of symbiosis . It has small jaws, but can use its tail to corral and even kill fish. It is a very strong swimmer and can even leap out of the water.