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Kiwa hirsuta

By Allison Sandres

Animala, Arthropoda, Malascostraca, Decapoda, Kiwaidae, Kiwa, Kiwa hirsuta


The diet of Kiwa Hirsuta revolves around bacteria. By waving their hairy claws through the plumes of oxygen, methane, and hydrogen sulfide emanating from the vents, they essentially haverst the bacteria to feed upon. They also have been seen eating mussels

Kiwa Hirsuta live near the pacific Antartic ridge, south of Easter Island, along hydrothermal vents.

Kiwa Hirsuta don´t have a lot of predators. It´s thought that some deep-sea octopuses and fish may eat them.

Kiwa hirsuta have been found near the Pacific Antartic ridge, south of Easter Island, along hydrothermal vents.

Kiwa Hirsuta were first found in 2005 ona hydrothermal vent near Easter Island.

Kiwa hirsuta were discovered by RObert Vrijenhoek,Michel Segonzac, and a Census of marine life scientist using the submarine DSV alvin.

The extreme enviroment of the deep sea is characterized by high pressure, cold temperatures, and limited food resources. Kiwa hirsuta have a slow metabolism, allowing it to conserve energy in the nutrient-poor conditions it inhabits

Adaptations of Kiwa Hursita

Hydrothermal vents release exremely hot and mineral-rich water, creating a unique ecosystem in the deep sea. Unlike most organisms, They don´t rely on photosynthesis for its energy. Instead, it has a symbiotic relationship with chemosynthetic bacteria living in its hairy setae. These bateria convert the minerals and chemicals from the vent fluids into organic compounds, which the crab can then consume

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There can be as many as 700 Yeti crabs in just a square meter in a hydrothermal vent.

Because hydrothermal vents are so dark, Kiwa Hirtusa have no need for sight. They are completely blind!

In addition to being about 1.3 times as long as it is wide, the Kiwa Hirtusas main body has a smooth surface. Featuring a slightly oblique front edge, there are small teeth that are located near the rostrum.


Scientists found that yeti crab performed a sort of dance, waving their claws through the water to provide a constant flow of oxygen, methane and hydrogen sulfide, which helps bacteria grow.

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They use their maxillipeds to haverst their own bacteria

Yeti crab use their antennas to sense any nearby chemicals