Biggest Land Living Arthropod On Earth


Coconut Crab In Bora Bora

Brocken Inaglory / CC BY-SA 1.0

Coconut Crab In Bora Bora

The coconut crab (Birgus latro) is a species of terrestrial hermit crab and it’s also known as the robber crab or palm thief. It is the largest land-living arthropod in the world. The weight of the crab is up to 4.1 kg and It can grow to up to 1 m in length from leg to leg. Male crabs generally being larger than female crabs. It is found on islands across the Indian Ocean and parts of the Pacific Ocean as far east as the Gambier Islands, mirroring the distribution of the coconut palm.

Coconut Crab

Drew Avery /CC BY 2.0 | Coconut Crab

The coconut crab is the only species of the genus Birgus. The body of the coconut crab is like that of all decapods, divided into a front section which has 10 legs and an abdomen. There is some difference in colour between the animals found on different islands ranging from orange-red to purplish blue. In most regions, blue is the predominant colour but in some places most individuals are red.

Coconut Crab

Drew Avery /CC BY 2.0 | Coconut Crab

Coconut crabs cannot swim and they will drown if left in water for more than an hour. They use a special organ called a branchiostegal lung to breathe. Coconut crabs use empty gastropod shells for protection. The coconut crab has a well-developed sense of smell which it uses to locate its food. The process of smelling works very differently depending on whether. Christmas Island in the Indian Ocean has the largest and densest population of coconut crabs in the world.

Juvenile Coconut Crab In shell

Drew Avery /CC BY 2.0 | Juvenile Coconut Crab In shell

Adult coconut crabs feed on fruits, nuts, seeds and the pith of fallen trees. The species is popularly associated with the coconut and has been widely reported to climb trees to pick coconuts. While coconut crabs can climb trees with a coconut and throw it from there in order to break it.

Coconut Crab

Mariemon /CC BY 3.0 | Coconut Crab

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