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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.
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).
Long-wristed hermit crabs are scavenger feeders with a broad diet consisting of detritus, organic material found in ocean surface foam, microcrustaceans and algae. [ 8 ] [ 10 ] Feeding is performed by scooping sand or other substrate with the chelipeds , ripping and tearing food, and then passing it to the mouth for consumption.
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.
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).
Its members are commonly called the 'symmetrical hermit crabs'. [2] They live in all the world's oceans, except the Arctic and the Antarctic , [ 2 ] at depths of 2,000 m (6,600 ft). [ 3 ] Due to their cryptic nature and relative scarcity, only around 60 specimens had been collected before 1987, when a monograph was published detailing a further ...
The brown stripe and bands are still present in the adult crabs. They are darker than most other species of its genus. [1] They have an abdominal lung and extremely reduced gills due to their terrestrial lifestyle. [2] They also have a disproportionately large dark purple pincher and long black eye stalks which they can easily be identified by.
Adults may grow to a typical length of 80 mm (3.1 in) and weight of 80 g (2.8 oz), and inhabit discarded gastropod shells. [2] They are coloured red or orange; this has led to the species' common name of strawberry hermit crab. [3]