sentence: Sharks have different-shaped teeth, depending on what they eat.
sentences_after: For instance, some sharks have sharp, pointy teeth, while bottom dwelling sharks have cone-shaped teeth for crushing shells. Because there are so many different kinds of sharks, and because each kind has its own kind of special teeth, many people enjoy collecting shark teeth. First, they measure the length of the tooth in inches. Even more terrifying is that some of the 'Megalodon' teeth are 6 inches long so that suggets a shark 60 feet long.
concept_name: shark
headings: Shark Characteristics