Shark Fact: In some form, sharks have been around for about 400 million years. They are the top predators of the ocean's natural food chain.
Shark Fact: There are over 400 types of sharks -- at least 30 of these species have been known to attack humans. They range in size from 6 inches to 45 feet.
Shark Fact: Each type of shark has a different shaped tooth depending on their diet. A shark may grow and use over 20,000 teeth in its lifetime!
Shark Fact: Sharks have the most powerful jaws on the planet. Unlike most animals' jaws, both the sharks' upper and lower jaws move.
Shark Fact: Sharks never run out of teeth. If one is lost, another spins forward from the rows and rows of backup teeth.
Shark Fact: Normally, sharks eat alone. But sometimes one feeding shark attracts others. They swim up as quickly as possible and all begin to try to get a piece of the prey. They bite wildly at anything that gets in their way -- even each other.
Shark Fact: Almost all sharks are "carnivores" or meat eaters. They live on a diet of fish and sea mammals (like dolphins and seals) and even such prey as turtles and seagulls.
Shark Fact: Sharks can have from 1 to 100 babies at a time, depending on the type of shark. The ones with pups that grow inside the mother have fewer babies at a time than sharks that lay eggs outside the body.