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mantis shrimp

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mantis shrimp, marine crustacean characterized by a pair of enlarged appendages, called maxillipeds, that form powerful claws for seizing prey. The last two segments of each of these legs are strong and sharp, and the end segment is folded back over the next segment to make a scissorslike cut. Mantis shrimps have stalked eyes and flattened abdomens with appendages bearing gills. They prefer warm shallow seas. A number of species are quite large, reaching 1 ft (30 cm) or more in size. Mantis shrimps are an important sea food outside the Western Hemisphere. They are classified separately from either true shrimps or praying mantises, whose forelimbs the maxillipeds superficially resemble. Mantis shrimps are grouped in the phylum Arthropoda Arthropoda [Gr.,=jointed feet], largest and most diverse animal phylum. The arthropods include crustaceans, insects, centipedes, millipedes, symphylans, pauropodans, and the extinct trilobites.
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, subphylum Crustacea, class Malacostraca.


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The mantis shrimp, which is found on the Great Barrier Reef in Australia, have the most complex vision systems known to science, researchers at Bristol University said.
Special light-sensitive cells in mantis shrimp eyes act as quarter-wave plates, which can rotate the plane of the oscillations (the polarization) of a light wave as it travels through it.
[ILLUSTRATION OMITTED] Mantis shrimp have oddball vision.
 
 
 
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