Updated 11/12/2013 Can you guess the organism?

This image is taken from a living creature that shifts from being squishy and flexible to rigid and tough when facing threats from predators.

  • Touch-me-not leaf
  • Caterpillar
  • Sea cucumber
Answer: Sea cucumber under the microscope.The sea cucumber's state-shifting skin has inspired development of a new material for biomedical implants that has potential to enhance treatment of Parkinson's disease, stroke and spinal chord injuries.

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