There are more than 52,000 species of Crustaceans in the world which include popular marine animals like lobsters, crabs, shrimp, crayfish and barnacles. Smaller crustacean breathe through their bodies and larger ones breathe through gills.

Coconut Crab

Coconut (or Robber) Crab is a crustacean found on islands of the South Pacific and Indian Oceans.

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  • 10 Weird Facts About Lobsters

    10 Weird Facts About Lobsters

    Do you think much about the lobster before you crack it open and dip it in butter? These humble animals have some very odd habits. For one thing, they pee out of their faces. See more »

  • Is there a 400 pound lobster out there?

    Is there a 400 pound lobster out there?

    Although no one can yet tell how old lobsters get, they show no apparent signs of aging. Learn why lobsters live so long and get so big, and what this means for other animals, including humans. See more »

  • Barnacle


    Barnacle is a small saltwater animal with a protective shell-like covering. There are more than 1,000 species. See more »

  • Crab


    Crab is a land- or water-dwelling crustacean with a short, flat body that is nearly circular. See more »

  • Crayfish


    Crayfish, or Crawfish, colloquially called crawdad is a freshwater crustacean related to the lobster. See more »

  • Crustacean


    Crustacean is a member of a large class of animals with segmented bodies. Crustaceans belong to the same major division, or phylum, of the animal kingdom as insects and spiders. See more »

  • Hermit Crab

    Hermit Crab

    Hermit Crab is a land- or water-dwelling crustacean. Unlike true crabs, hermit crabs have soft, vulnerable abdomens. See more »

  • Lobster


    Lobster, sea-dwelling animal related to the crayfish, shrimp is and crab. Lobster meat is considered a delicacy. See more »

  • Shrimp


    Shrimp is an animal found in both freshwater and saltwater throughout the world. Like its relatives the lobsters, crabs is and crayfish, the shrimp is a crustacean. See more »

  • The Ultimate Crustacean Quiz

    The Ultimate Crustacean Quiz

    The crustacean belongs to the same major division of the animal world as spiders, lobsters, shrimp and water flies. Take this quiz and learn more about how multi-faceted this group of creatures is. See more »

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