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Calcinus guamensis is a small hermit crab with a maximum shell width of about 6 mm (0.24 in). It is easily recognized by its coloration of a mustard brown or olive that fades into white, with its walking legs dipped in black. [5] Its uneven claws, with the left being significantly larger, are bluish-green and differ from its reddish-brown body.
Further, like many pets, hermit crabs need enrichment and need opportunities for hiding and climbing. Huts, wood, and artificial plants can be used to fill this need. [45] In the wild hermit crabs may walk several miles a night for purposes of foraging or migration. [46] Hermit crabs are nocturnal and are most active during the night. [43]
Many carcinised Anomura evolved from ancestors with morphologically intermediate forms reminiscent of modern squat lobsters, [19] not including the King Crab which is hypothesized by researchers to be descended directly from a variety of Pagurid hermit crab. There may be various advantages to adopting brachyuraform (true crab-like) traits.
P. armatus is one of the largest species of hermit crab: [3] adults may reach a carapace length of 43 mm (1.7 in). [6] The legs, including the claws, have bands of colour, in red, orange and white, and the claws bear short spines on the dorsal surface. [6] The eyestalks are short, but bear large black compound eyes. [6]
Calcinus verrillii, commonly known as Verrill's hermit crab, is a species of hermit crab in the genus Calcinus which is endemic to Bermuda.It was first described by the American zoologist Mary J. Rathbun and named in honour of the American zoologist Addison Emery Verrill, who spent much time with his students studying the geology and marine fauna of Bermuda.
A Caribbean hermit crab in the Dry Tortugas National Park, Florida. The Caribbean hermit crab (Coenobita clypeatus), also known as the soldier crab, [2] West Atlantic crab, tree crab, or purple pincher (due to the distinctive purple claw), is a species of land hermit crab native to the west Atlantic, Belize, southern Florida, [3] Venezuela, and the West Indies.
Hermit crab at Cabo Blanca, Nicoya Peninsula, Costa Rica. Coenobita compressus is a member of the phylum Arthropoda and the class Malacostraca. They can be up to 12 mm (0.47 in) in length and are thought to be one of the smallest species of land hermit crabs. [citation needed] They have four walking legs, a small pincer, a large pincer, and ...
The coconut crab (Birgus latro) is a terrestrial species of giant hermit crab, and is also known as the robber crab or palm thief. It is the largest terrestrial arthropod known, with a weight of up to 4.1 kg (9 lb). The distance from the tip of one leg to the tip of another can be as wide as 1 m (3 ft 3 in).