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Rating 0 Rating 0 The octopus is a cephalopod mollusk that has not internal or external skeleton. This allows them to squeeze through tight places, something crabs, decapods crustaceans, are not able to do because of their thick exoskeleton.
The octopus is also a highly intelligent animal that can camouflage itself using specialized skin cells to change color, opacity, and reflectivity of the skin. The muscles in the skin can also change the texture of their mantle to give the appearance of seaweed or the texture of a rock, increasing camouflage abilities. Crabs cannot do this.
All octopuses are also able to swim, something that most crabs cannot do. While crabs primarily feed on algae, octopuses eat crabs as one of their primary foods. Finally I'm yet to see a crab that can produce a baby octopus, something that the octopus has no trouble doing.
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