SharksSharks are one of the oldest animal species in world, they developed 450 million years ago, 200 million years before dinosaurs.
Today approximately 500 types of sharks live in all oceans and seas of world. From the smallest, sized only 15 cm, to the largest Whale sharks, which grow in length up to 12 metres and are the largest fishs in the oceans. Sharks are predators at the top of the food chain. They have a very well developed smell and can smell blood distant several kilometers.