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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.
Eupentacta quinquesemita is a species of sea cucumber, a marine invertebrate with an elongated body, a leathery skin and tentacles surrounding the mouth.It is commonly known as the stiff-footed sea cucumber or white sea cucumber, [2] and occurs on rocky coasts in the northeastern Pacific Ocean.
C. robustus is more distantly related to the Holothuriida, Elasipodida, and Apodida orders of sea cucumbers. The clade Dendrochirotida is defined by dendritic tentacles around the mouth and the presence of an introvert: retracting muscles that withdraw the tentacles and anterior end of the sea cucumber into the body. [6]
On its ventral surface there is long white podia. Its mouth is also located ventrally with 18-20 peltate tentacles. The anus is located on the dorsal side of the animal towards the terminal end. Their average length is about 69 cm long, but the longest recorded sea cucumber was 89 cm long. [5] Some of the biggest sea cucumber can weigh up to 5 ...
The orange-footed sea cucumber (Cucumaria frondosa) is the largest sea cucumber in New England, United States. [2] It is one of the most abundant and widespread species of holothurians within the North Atlantic Ocean and the Barents Sea (Russia), [3] being most abundant along the eastern coast of North America.
The sea cucumber, like other bioluminescent animals, is able to emit light. It uses this effect as an alarm to expose its self and potential predators in times of an attack.
Sclerodactyla briareus is an elongated oval or cigar-shaped sea cucumber and grows to about 15 centimetres (5.9 in). It often adopts a characteristic pose with both ends raised above the substrate. At the anterior end there is a mouth surrounded by a ring of ten, short, branched feeding tentacles. [2]
The body of Holothuria glaberrima is cigar-shaped, with a whorl of twenty bushy feeding tentacles at the anterior end surrounding the mouth. The cuticle is leathery and tough; the dorsal surface is smooth, while the ventral surface or "sole" bears three longitudinal rows of dark brown tube feet. This sea cucumber grows to a length of 10 to 15 ...