Q:

How long do crabs live?

A:

Quick Answer

The lifespan of a crab varies according to species. A blue crab lives one to eight years, while a hermit crab lives 30 to 70 years. The Dungeness crab lives up to 10 years, and the horseshoe crab lives up to 20 years or more.

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How long do crabs live?
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Full Answer

Red king crabs live up to 30 or more years. Crab life expectancies also vary according to habitat. Crabs kept as pets can live longer than crabs in the wild when they are properly cared for. Crabs are widely eaten by humans, making up 20 percent of all marine crustaceans that are farmed or caught around the world.

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Related Questions

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    How many legs does a hermit crab have?

    A:

    Like other members of the order Decapoda, hermit crabs have a total of 10 legs. These include the chelipeds, or front claws, which are used for grasping and pinching. The larger of the two chelipeds is designed for self-defense and for protectively closing the opening of the crab's shell.

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  • Q:

    What do sea crabs eat?

    A:

    Depending on the species, sea crabs eat plankton, worms, fish, shrimp and other crabs. Crabs that live in the deep sea survive on foodfalls, which are scraps of meat that fall to the ocean floor after being killed by another sea animal.

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    What do freshwater crabs eat?

    A:

    There are more than 1,300 species of freshwater crabs and, as such, there is no one diet consistent to all of them. However, most are omnivores and scavengers.

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    What are some facts about hermit crabs?

    A:

    Hermit crabs are marine or terrestrial invertebrates called decapods that mostly live underwater, with a few tropical species living on the land. They are named for their habit of living in scavenged shells, which they must replace regularly to accommodate their growing bodies. Hermit crabs are scavengers that subsist on a variety of organic material.

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