Shark Essay Topics

Shark evolution

Sharks, commonly referred to as fish are in fact quite different from the regular bony fish. Sharks have a cartilaginous skeleton, which is does not fossilize well, but despite this sharks have left a considerable fossil record. Shark evolution is in fact one of the most successful cases of phylogenic development. The evidence of sharks… View Article

Old Folks Home

Sharks are a group of fish characterized by a cartilaginous skeleton, five to seven gill slits on the sides of the head, andpectoral fins that are not fused to the head. Modern sharks are classified within the clade Selachimorpha (or Selachii) and are the sister group to the rays. However, the term “shark” has also… View Article