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Invisible Squid Dodge Predators November 11, 2011

Posted by stuffilikenet in Awesome, Octopus, Science.
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Japetella heathi and Onychoteuthis banksii can switch rapidly from red or black to transparent in order to avoid predators who watch for shadows above them.  At more benthic depths they turn back to red or black to avoid detection from bioluminescent hunters.

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No, really:

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From ScienceDirect.com.

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