Long, sharp teeth are excellent at gripping small or medium-sized fish and squid. The bull shark has needle-like teeth that are slightly serrated, for example. They mostly eat fish, but will also ...

A Destin charter boat captain got a great surprise while taking customers out fishing. See photos, what to know about great ...

While a great white shark's 300 serrated teeth are an amazing hunting adaptation, what's even more amazing is their replaceability. In a lifetime, each shark can grow up to 20,000 of them.

Unlike some sharks that take a bite and let go, the bull shark holds on and thrashes before sawing into its prey with its serrated teeth. They are found in both salt and freshwater and is ...