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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).
Adult red-footed boobies are known to be hunted by coconut crabs; the crabs use their powerful claws to break the wings of boobies or catch them by their legs. One booby attacked while asleep on a low branch was killed by six coconut crabs over a period of several hours, while another caught after landing near the entrance to a crab burrow was ...
Xanthidae is a family of crabs known as gorilla crabs, mud crabs, pebble crabs or rubble crabs. [1] Xanthid crabs are often brightly coloured and are highly poisonous
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They mostly eat fallen leaves, fruits, flowers and seedlings, but will also feed on dead animals (including cannibalising other red crabs), and human rubbish. The non-native giant African land snail is also another food choice for the crabs. [9] Red crabs have virtually no competition for food due to their dominance of the forest floor.
Intrigued — and somewhat concerned — researchers scoured the internet for images of hermit crabs using human trash instead of natural shells, the study said. They found almost 400 examples.
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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.