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Most hermit crabs attempt to place the most anemones as possible, while some others steal the anemone another hermit crab is carrying. There is a mutually beneficial relationship between the two, as they help defend against predators.
Because the hermit crab lives in the bottom of rock pools and ocean floors, and due to its size, its predator list is long. It is easy prey for the likes of fish, and octopus. [15] Other crabs are also known to eat the smaller and more unprotected species, like the hermit crab, hence the need for shells to protect the soft body.
Hermit crabs cannot produce their own shells, and therefore must scavenge for abandoned ones. [ 5 ] [ 6 ] [ 7 ] Shell selection plays many crucial roles in P. longicarpus , such as providing protection from predators, desiccation and salinity stress, as well as influencing competition, population size, and reproductive behaviors in the species.
The hermit crab gains protection from predators by the sea anemone's stinging, and the sea anemone gains an increase in food from the material thrown up by the hermit crab's movements. [3] The relationship is apparently instigated by the sea anemone, which begins a complex series of manoeuvres in order to mount the shell carried by the hermit ...
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).
P. Paguridae; Paguristes cadenati; Paguristes eremita; Paguristes frontalis; Paguristes ulreyi; Pagurodofleinia; Pagurus; Pagurus acadianus; Pagurus albidianthus
Coenobita brevimanus is a species of terrestrial hermit crab belonging to the family Coenobitidae, which is composed of coastal living terrestrial hermit crabs.From there it belongs to the genus Coenobita, one of two genera split from the family, which contains sixteen species.
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.