Shark Embryo Responds to Electrical Stimulus by Stopping Gill Movements

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Researchers say a bamboo shark embryo will cease gill movements in response to an electrical stimulus. The sharks use highly sensitive electroreceptors to detect the electric fields emitted by potential prey. It appears some sharks can also use these electroreceptors to detect predators. The shark embryo reacts to the electrical stimulus by immediately ceasing gill movements - an innate avoidance response.

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