Are sharks and dolphins enemies; What mammals are poisonous; does soap break down bacteria?
Q: I’ve heard that dolphins and sharks are natural enemies. If this is so, why? (Adam, Bridgend, Llangeinor, Wales, UK) A: Sharks and dolphins arent enemies. Instead they “show a natural toleration of each other,” says Chicago Zoological Society biologist Randall Wells, who has been studying dolphins in Floridas Sarasota Bay since 1970. They get along, especially if the shark is small and harmless (to the dolphin), which most sharks are. Dolphin cavorting in the bow wave of a NOAA ship. [Grady Tuell, NOAA] Sometimes sharks can be hostile. About 31% of the dolphins in Sarasota Bay show scars from shark bites (presumably big sharks). If possible, dolphins flee the big ones. A dolphin researcher, Richard Connor, once witnessed such flight while studying dolphins in the Indian Ocean. An 8-foot great white shark cruised quietly into a school of resting dolphins. The dolphins panicked, leapt frantically out of the water in a wild attempt to escape, bolted away as fast as they could, and didn
