Animals: Flight v. Glide

With all the science of 5,000 years of civilization at his command, a Connecticut geology professor last week was puzzled by a problem which intrigued ancient Ulysses. Ulysses watched the slim dark fishes dart from the Mediterranean, spread their big fins, and shoot through the air 25 to 30 m.p.h. for as long as 13 seconds, just as Magellan watched them, just as U. S. holiday voyagers on cruises to Havana and Caribbean ports watch them. But do they fly or glide?

A flying fish has big pectoral fins which fold against its sides when the fish swims and spread like the....

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