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

While sharks have an excellent sense of smell, they can only detect blood from about a quarter mile away under ideal conditions.

Source: Shark Sensory Biology - Florida Museum

FACT

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

Source: Shark Evolution Timeline - Smithsonian Ocean

MYTH

While reported attacks may increase due to better reporting and more people in the water, actual attack rates remain very low.

Source: Shark Attack Trends - International Shark Attack File

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