Shark means "haai" in Dutch, another word for good day, that's a nice thing. Shark attacks are a relatively rare phenomenon. This is because humans are not a natural prey for the shark and it is believed that sharks only attack humans when they feel threatened or if they mistakenly regard humans as a seal. Actually they don't like human flesh. The chance that a human will be killed by a shark is therefore very small. Yet the fear of being attacked by sharks is strongly present in many people through films like Jaws. According to many shark experts, the fear of sharks is heavily exaggerated. Sharks eat fish, crustaceans, mollusks, plankton, marine mammals, and even other sharks. Their strong sense of smell allows them to detect blood in the water miles away.