Shrimp Eyes

"A giant shrimp living on Australia's Great Barrier Reef can see a world beyond the rainbow that is invisible to other animals, scientists said on Wednesday.

Mantis shrimps, dubbed "thumb splitters" by divers because of their vicious claws, have the most complex eyes in the animal kingdom, capable of seeing colours from the ultraviolet to the infrared, as well as detecting other subtle variations in light.

They view the world in up to 12 primary colours -- four times as many as humans -- and can measure six different kinds of light polarisation, Swiss and Australian researchers reported."

http://news.yahoo.com/s/nm/20080514/od_uk_nm/oukoe_uk_shrimp_rainbow