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Vertebrate Eye Uses Mirror Instead of Lens Saturday, December 27, 2008 - Ehud Rattner Home >> Headlines >> Biology   
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The deep sea is full of surprises, and the four-eyed spookfish is up there with the best of them. It is the first vertebrate found with eyes that use mirrors, rather than a lens, to focus light. In clear water, sunlight can penetrate to a depth of 1000 metres, so some deep-sea fish have developed tubular, upward-looking eyes. "It is like having a telescope on your head that points towards the surface," says Ron Douglas from City University London. (source: newscientist.com)
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