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Evisceration is a method of autotomy involving the ejection of internal organs used by animals as a defensive strategy. Sea cucumbers (Holothuroidea) eject parts of the gut in order to scare and defend against potential predators such as crabs and fish. The organs are regenerated in a few days by cells in the interior of the sea cucumber. [1][2]
Sea cucumbers can be found in great numbers on the deep seafloor, where they often make up the majority of the animal biomass. [17] At depths deeper than 8,900 m (5.5 mi), sea cucumbers comprise 90% of the total mass of the macrofauna. [18] Sea cucumbers form large herds that move across the bathygraphic features of the ocean, hunting food.
Description. Bohadschia argus has the same roughly cylindrical body plan shared by most sea cucumbers. On average, it measures approximately 36 cm (14 in) in length and 1.8 to 2.2 kg (4.0 to 4.9 lb) in weight, with a maximum recorded length of 60 cm (24 in). Its tough outer body wall, around 10 mm (0.39 in) in thickness, is firm and leathery to ...
Psolus californicus Fisher, 1905. Psolus chitinoides Clark, 1901 [lapsus] Psolus chitonoides, also known as the slipper sea cucumber, armoured sea cucumber, creeping armoured sea cucumber, or creeping pedal sea cucumber, [ 2] is a species of sea cucumber in the family Psolidae. It is found in shallow water on the western coast of North America.
The Japanese sea cucumber is found along the coast of Russia, China, Japan and Korea.The range extends from Alaska and Sakhalin Island to the Amami Islands, Japan. [3] The red morphs are found on gravel beds offshore at depths of 40 metres (130 ft) or deeper while the other two colours are found intermingled on muddy and sandy bottoms at shallower depths. [3]
The sea cucumber will be fully regenerated within 144 hours of transection. If a transection of a sea cucumber is made posteriorly to the crossover point, then the esophagus, the stomach, and the intestine will all be represented in the final form of the sea cucumber. Similar processes as regeneration of an anterior transection will occur, and ...
The mechanism by which H. difficilis feeds is unknown but other Holothurian deposit feeders have different shaped tentacles that catch food. Although the life cycle of H. difficilis is not specifically known, sea cucumbers can start off as fertilized eggs that either develop inside an adult sea cucumber or float freely through the water.
Chiridotidae. Chiridotidae is a family of sea cucumbers found in the order Apodida. Within the family, there are 16 recognized genera all with different ranges of body types and functions. [1] Sea cucumbers play a fundamental role in many marine ecosystems.