The Difference Between Sharks and Dolphins
Most people know sharks are fish and that dolphins are mammals. Do you ever think about the semantics of that though? How much difference is there between a fish and a mammal? It turns out, there is a fairly big difference, and this photo paints that picture pretty well. Like very well indeed.
Even though sharks are bigger than whales, look at the difference in the size of their brains. The difference is quite noticeable. It also explains why dolphins appear more sensitive and willing to interact with humans. Overall, sharks are the more animalistic or primal of the two.