Invertebrate Research–Crab

A crab is an invertebrate. A mud crab turns orange when it is hot. Crabs eat sand dollars, worms, mussels, and clams. Predators are things that eat crabs. Birds, turtles, people, octopus, and otters are predators of crabs. A crab can live in the ocean, at the beach, or in an aquarium.

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