FACT

Sharks evolved around 400 million years ago, while trees appeared about 350 million years ago.

Source: Shark Evolution Timeline - Smithsonian Ocean

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

FACT

Sharks can lose and regrow thousands of teeth in their lifetime, with some species growing new teeth every two weeks.

Source: Shark Teeth Facts - American Museum of Natural History

MYTH

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

Source: Whale Shark Facts - WWF

MYTH

Some shark species can pump water over their gills while stationary. Only certain species like great whites need to keep moving.

Source: How Sharks Breathe - ReefQuest Centre