Whale shark, a beautiful big creature that is as big as a whale. A whale shark is a huge fish with a big mouth. They do have small teeth they call dermals, but whale sharks never use them. A whale shark isn't a whale, but part fish and some shark. The similarities between a fish and whale shark are… Not like other sharks to swim they only use their tail when a whale shark uses its whole body to swim like a fish. Also other similarities between a fish and a whale shark has its mouth under it’s snout. A whale shark is a fish also in appearance too. Whale sharks and and fish both have tails, fins, and their gills are huge. Their size is up to (40 feet). I hope by then reading this helps you look out for checkerboard on a big size shark.