5 awesome facts you didn’t know about sharks

To celebrate Shark Week, we wanted to share 5 cool facts about our deep-sea friends. 1. Sharks have existed almost unchanged for 400 million years, since long before the dinosaurs. 2. It’s impossible to sneak up on a shark, because their eyes are on the sides of their heads and most can see almost as well behind them as they can in front. 3. A great white shark can lose 1,000 teeth in a year. 4. Sharks sink if they stop swimming. 5. Two-thirds of a shark’s brain is dedicated to its sense of smell. Do you know any cool shark facts? Make sure you share them in the comments below.