Marine hermit crabs obtain oxygen from the water by breathing through their gills. Being active at night allows aquatic hermit crabs to hide from predators. Marine hermit crabs are friendly and will welcome newcomers into their colony. They sleep in groups and forage for food as a group. They live in groups of a hundred or more. We believe that these hermit crabs prefer to live in the ocean’s shallower waters. Aquatic hermit crabs live in deep ocean waters on the sea floor as well as in shallower water. The Indian Ocean, as well as European and North American waters, is home to marine hermit crabs. The vast majority of these are found in the temperate zones of the northern hemisphere. Marine hermit crabs can be found in both temperate and tropical waters throughout the world’s oceans. Because the hermit crab finds an empty shell to use, the shells vary in shape, size, and color. The shape and softness of the abdomen allow the hermit crab to curl its body inside of a shell. To protect its abdomen, the hermit crab inserts itself inside an empty shell. The hermit crab has a hard exoskeleton that does not cover its abdomen. The covering on a hermit crab's body is called an exoskeleton. The body of a hermit crab is shaped like that of a crayfish. The majority of marine hermit crabs range in size from one and a half inches to four inches. These colors include green, red, blue, yellow, orange, brown, pink, and white. Hermit crab bodies can be a variety of colors. The other two antennae are curled and shorter. Two of the antennae are straight and long. There are four antennae attached to its head. The hermit crab has two compound eyes attached to eye-stalks. A hermit crab’s hind legs are smaller than its other legs. ![]() The other legs do not have claws because they are walking legs. The hermit crab’s smaller right front leg has a claw that the crab uses to scoop food and water. The hermit crab’s larger left front leg has a claw that the crab uses to defend itself. These legs are multicolored with markings. ![]() In this article, we will be talking about marine hermit crabs that live in salt water. Learn more about the terrestrial hermit crab in this article.Įxcept for one freshwater species, all aquatic hermit crabs live in saltwater. On land, aquatic hermit crabs can only breathe for a short time. In water, however, terrestrial hermit crabs are unable to breathe. ![]()
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