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What is a naked retina good for?

The crab Bythograea thermydron has eyes that consist of large naked retinas. Studies of the crab's larval forms suggest that these eyes are a specific adaptation to the dim environment of oceanic volcanic vents.

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Correspondence to Michael F. Land.

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Land, M. What is a naked retina good for?. Nature 420, 30–31 (2002).

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