Are Great white sharks mammals

Sharks are cartilaginous fish. Cartilaginous fish receive oxygen from water via their gills, are cold blooded, and have a skeleton consisting of cartilage, rather than bone. Mammals receive oxygen from the air via lungs, are warm blooded, and have a skeleton made of bone. Mammals also are covered in hair, rather than the scales sharks have, and produce milk for their young. Sharks are not closely related to mammals via evolution, either.