Your Skeleton is Where?

This intertidal crab has evolved a protective exoskeleton.

Many animals in the ocean have found ways to hide or protect themselves from predators.  Some defenses include matching yourself to your surroundings to camouflage, and hiding during the day when predators are active and coming out at night instead.  Here we see examples of evolving a skeleton on the outside of your body (called an exoskeleton) or using stinging tentacles to help protect yourself from hungry predators, like fish or people!

Tentacles with singing cells are a relatively good defense against hungry predators.

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