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A hermit crab emerges from its shell, Coenobita perlatus Outside its shell, the soft, curved abdomen of hermit crabs, such as Pagurus bernhardus, is vulnerable. Hermit crab species range in size and shape, from species only a few millimeters long to Coenobita brevimanus (Indos Crab), which can approach the size of a coconut and live 12–70 years.
Dardanus pedunculatus, commonly referred to as the anemone hermit crab, is a species of hermit crab from the Indo-Pacific region. It lives at depths of up to 27 m and collects sea anemones to place on its shell for defence.
Pagurus is a genus of hermit crabs in the family Paguridae.Like other hermit crabs, their abdomen is not calcified and they use snail shells as protection. These marine decapod crustaceans are omnivorous, but mostly prey on small animals and scavenge carrion.
Pagurus hirsutiusculus is a species of hermit crab, commonly called the hairy hermit crab. It lives from the Bering Strait south to California and Japan , from the intertidal zone to a depth of 110 m (360 ft).
Anomura (sometimes Anomala) is a group of decapod crustaceans, including hermit crabs and others. Although the names of many anomurans include the word crab, all true crabs are in the sister group to the Anomura, the Brachyura (the two groups together form the clade Meiura).
Pagurus samuelis is a small hermit crab, at up to a total length of 40 mm (1.6 in) and a carapace width of up to 19 mm (0.75 in). [2] The base colour of the exoskeleton is brown or green, [2] but the antennae are red, and adults have bright blue bands near the tips of their legs. [3] In smaller individuals, the bands may be white. [2]
The Acadian hermit crab, also known as Pagurus acadianus, can be found in the Western Atlantic Ocean, including areas such as the Vineyard Sound. [5] In addition, the Acadian hermit crab has been cited as the most abundant species of crab in Salisbury Cove, Maine by William C. Grant, Jr, during his extensive study of hermit crabs populating this area in 1961.
The hermit crab is one of at least 24 species that transfer over sea anemones to a new shell. [4] The placement of the V. paguri might protect the crabs from having their chilepeds and legs eaten by predators such as fish and octopuses. This behavior was first studied in 1920, but with no specific anemones mentioned.