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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]
Thelenota ananas, a giant sea cucumber from the Indo-Pacific tropics. Sea cucumbers are echinoderms from the class Holothuroidea (/ ˌhɒləˌθjʊəˈrɔɪdiə, ˌhoʊ -/ HOL-ə-thure-OY-dee-ə, HOHL-). They are marine animals with a leathery skin and an elongated body containing a single, branched gonad. They are found on the sea floor worldwide.
Enypniastes is a genus of deep-sea sea cucumber. It is monotypic, being represented by the single species Enypniastes eximia. Due to its unique appearance, the species has been dubbed the headless chicken fish, headless chicken monster, and the Spanish dancer. [3][4] It is also known as the swimming sea cucumber, and some are called the pink ...
The California sea cucumber can grow to a length of 50 cm (1 ft 8 in) and a width of 5 cm (2 in). It has a soft, cylindrical body, with red-brown to yellowish leathery skin. It has an endoskeleton just below the skin. The mouth and anus are on opposite ends of the body. The mouth is surrounded by twenty retractable tentacles that are used to ...
Holothuria cinerascens. Brandt, 1835. Holothuria (Semperothuria) cinerascens is a species of sea cucumber in the family Holothuriidae. [1][2] The sea cucumber is widely distributed in the Pacific and Indian ocean, being found from the Red Sea to Madagascar and from Japan to Australia. It was first described by Brandt in 1835.
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 ...
Actinopyga caerulea, the blue sea cucumber, is a species of sea cucumberin the family Holothuriidae. Named for its unique blue coloration, this species can be found along the continental shelfof the tropical Western Indo-Pacificregion, at depths between 12 and 45 m (39 and 148 ft). It is a commercially important species, and is harvested for ...
Holothuria grisea, the gray sea cucumber, is a mid-sized coastal species of sea cucumber found in shallow tropical waters of the Atlantic Ocean from Florida to Southern Brazil and West Africa. [1] They have a variety in color and can range from red to more yellowish with brown markings. [1] They are also a food source for local and ...