There are over 470 species of sharks and they have been living on Planet Earth for 420 million years.
The smallest shark - the dwarf lantern shark - is only 17 centimeters (6.7 inches) in length, while the whale shark is the largest specie in the world, with approximately 12 meters (39 feet).
Sharks live in all oceans down to depths of 2,000 meters (6,600 feet). Usually, they do not live in freshwater with the exception of the bull shark and river shark.
Teeth and jaws of sharks are deadly, but only the great white, oceanic white tip, tiger and bull sharks are responsible for fatal attacks on humans. The International Shark Attack File reveals that between 1580 and 2012, up to 2569 people lost their lives due to shark attacks.
USA and Australia are the most sharks infested countries in the world. From year 1580, a total of 510 shark attacks killed 144 people in Australia. In the United States, 1022 attacks have already caused 36 deaths.
Florida and California have been suffering more than any other US state. With a total of 772 attacks, both territories have claimed 21 lives. Maui, Oahu and Kauai record all fatalities (8) ever in the Hawaiian Islands.
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