Stingrays are very similar to sharks. Like sharks, stingrays have charging sensors around their mouths to help them sense the approach of their prey. When they know their prey is approaching, they will catch it with their mouths. Their teeth are strong enough to crush oysters and mussels. However, the most dangerous part of stingray is its famous tail, which has sharp barbs on its spine. Some poisonous stingrays are fatal to human beings. There have been many famous stingray deaths. In Greek mythology, Odysseus died because of the tail of a stingray. Australian environmentalist and animal expert steve irwin was also stabbed in the heart by the barb on the tail of the stingray.