A very common question and here is the most sensible answer to that question.
No. There are around 300 different species of sharks, only 40 of which are known to have attacked
people. One of the most dangerous sharks in North America is the great white shark, found along the Pacific coast between Mexico and southern Canada. Another one to watch out for is the tiger shark, which lives in the warmer Atlantic waters off the coast of Florida and around the islands of Hawaii. Shark attacks really are pretty rare. For instance, there are usually only two or three reported in Hawaiian waters each year. There are different ideas about why sharks attack people. Tiger sharks, it seems, may attack because they get confused in murky water — and mistake surfers in black wet suits for seals. Reef sharks seem to attack because they are territorial animals, protecting their piece of the sea. The whale shark, which has 5,000 teeth and can grow up to 50 feet long, is the largest type of shark. However, it prefers food like small fish, shrimp and plankton, and therefore is not dangerous to people.
