Why do devil rays have a heat-exchanger under their brains? Scientists unravel mystery.

July 1, 2014 7:43 PM

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Why do devil rays have a heat-exchanger under their brains? Scientists unravel mystery.

Chilean devil rays, long thought to keep to shallow waters, actually dive to depths of 6,000 feet, scientists have discovered.

The Chilean devil ray has always been considered a shallow-water swimmer, but new research shows that the species frequently dives to depths of more than 6,000 feet (1,800 meters), likely in search of food.

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