MYTH

Of over 500 shark species, only about 10 are considered dangerous to humans. Most sharks are harmless.

Source: Shark Species and Human Risk - NOAA Fisheries

FACT

Sharks have skeletons made entirely of cartilage, the same flexible material in human ears and noses.

Source: Shark Anatomy - Georgia Aquarium

MYTH

Whale sharks are the largest, reaching up to 40 feet. Great whites typically reach 15-20 feet.

Source: Whale Shark Facts - WWF

MYTH

Bull sharks can live in both salt and fresh water, and have been found hundreds of miles up rivers.

Source: Bull Sharks in Freshwater - National Geographic

MYTH

Sharks don't sleep in the traditional sense, but they do have periods of rest and reduced activity.

Source: Do Sharks Sleep? - Discovery Channel