Tuesday, 8 December 2015

Clever Cuttlefish 'Freeze' Bioelectric Fields to Avoid Predators

by Stephanie Pappas, Live Science Contributor | December 02, 2015 01:07pm ET

Cuttlefish are known for their ability to change colors, but these clever cephalopods have a problem: Sharks, rays and other predators hunt not only by sight, but by sensing the bioelectric fields emanating from their prey.

Now, new research reveals that cuttlefish have a solution to this problem: They turn down their natural electric fields by freezing in place and holding their breath.

This freeze response has not been studied as extensively as cephalopod color camouflage, or cuttlefish's response of releasing ink and jetting away from danger, said study researcher Christine Bedore, a biologist at Georgia Southern University

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