Watch a growing crab climb out of its shell

Watch a crab climb out of its shell and emerge with a new set of gills.


Science Recorder | Kramer Phillips | Thursday, November 21, 2013

This is absolutely amazing!



I came across this news and video recently, posted it on my facebook and got a huge response to it… so I thought i better make a blog post. It seems I’m not the only one that’s amazed at the wonders of nature.

Because of a crabs restriction in its shell, it cannot grow like other animals. It must shed it’s shell to continue its growth, a process called molting. The process leading up to the molting takes several weeks, but the actual molting only takes about 15 minutes as the crab first backs out, then pulls out its hind legs, then its front legs, and finally comes completely out of the old shell. The video above captures this process magnificently!

When a crab molts, it removes all its legs, its eyestalks, its antennae, all its mouthparts, and its gills. It leaves behind the old shell, the esophagus, its entire stomach lining, and even the last half inch of its intestine.

Sometimes the old shells wash up on the beach so if you ever come across what appears to be a dead crab, it may actually be just the old shell…pretty amazing.

See the full article “Watch A Crab Climb Out Of Its Shell”  here in the Science Recorder


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Brett Gurney

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