An incredibly-rare lobster that has grown two crusher claws has been discovered.

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Pic: NationalLobsterHatchery/BNPS<br />
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Can you spot what's unusual about this image?<br />
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An incredibly-rare lobster that has grown two crusher claws has been discovered in a fisherman's cage.<br />
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Tristan McLean, 38, was fishing off the coast of Norfolk when he pulled up a pot to find the one-off specimen.<br />
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The 1ft-long crustacean had two identical claws used for crushing.<br />
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Lobsters are born with two cutter claws and only one of these develops into a crusher claw.