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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).
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 crabs can measure up to 3-feet across, have claws with astounding crushing power, and are able to sniff out their prey. They have also been proven capable of gaining an advantage over animals ...
Coconut crab (5th place) Pacific water sharks (2nd place) Camel spider (6th place) Sun bear (3rd place) Saltwater crocodile (1st place) Chemical Warfare. Slow loris ...
Credit the crabs: The Brits who uncovered the bones said “coconut crabs had scattered many bones,” per the National Geographic report. To test this theory, the International Group for Historic ...
Crabs are mostly active animals with complex behaviour patterns such as communicating by drumming or waving their pincers. Crabs tend to be aggressive toward one another, and males often fight to gain access to females. [23] On rocky seashores, where nearly all caves and crevices are occupied, crabs may also fight over hiding holes. [24]
The crabs can travel up to 1.46 km (0.91 mi) in a day, and up to 4 km (2.5 mi) in total. [4] Only a few land crabs, including certain Geosesarma species, have direct development (the mother carries the eggs until they have become tiny, fully developed crabs), and these do not need access to water to breed.
Between 2018 and 2021, there was an unexpected 92% decline in snow crab abundance, or about 10 billion crabs. The crabs had been plentiful in the years prior, puzzling scientists and crabbers alike.