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Are sharks animals?

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Definition of Shark. "Fish or Animal". (Page 1) - Fishes (Including Sharks) - Ask a Biologist Q&A. read more

In most oviparous shark species, an egg case with the consistency of leather protects the developing embryo(s). These cases may be corkscrewed into crevices for protection. The egg case is commonly called a mermaid's purse. Oviparous sharks include the horn shark, catshark, Port Jackson shark, and swellshark. read more

Sharks are not mammals. Rather, they are a species of fish because they have a skeleton that is entirely composed of cartilage and is equipped with tough, leathery, scale less skin. These skeletons differ greatly from those of the bony fish or other terrestrial vertebrates. read more

It's both. Humans are primates, and primates are mammals, and mammals are animals. Similarly, great whites are sharks, and sharks are fish, and fish are animals. Think of evolution as a great tree of life -- a very common and illuminating metaphor that goes back at least to Darwin. read more

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