Science: What to do About Sharks

From the first days of seafaring man, the shark has been dreaded as a killer. The dread was based more on hearsay than actual experience. Few men had ever been attacked by them; fewer still lived to tell the tale. Advice on what to do in the presence of a lurking shark was flatly contradictory: one school held that the swimmer should hold still and keep quiet; the other said churn wildly and shout. During World War II thousands of seamen and downed airmen came within reach of the shark's sinister jaws. With air traffic over open water becoming heavier...

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