- There are approximately 350 different species of known sharks.
- Sharks have been around for about 400 million years - long before dinosaurs even existed
- Sharks can hear a fish swimming over one mile away, and can smell one drop of blood in a million drops of water.
- A large meal may last a shark up to three months without it having to eat again.
- A shark may lose and grow up to 30,000 teeth in its lifetime.
- Two-thirds of the brain of a shark is dedicated to its sense of smell.
- Oil in the liver is what keeps the shark from sinking as its density is lower than that of the surrounding water.
- The Megalodon, believed to have lived between 25 and 1.6 million years ago, is speculated to have been as large as 30 meters long.
- There are disputes regarding how large this shark got because the only fossilised remains are its teeth and a few vertebrae.
- You are 1,000 times more likely to drown in the sea than you are to be bitten by a shark.
apr 3 2011 ∞
apr 3 2011 +
apr 3 2011 +