Holothuria tubulosa is one of the species collected by divers, who can gather 2000 to 3000 in a day.
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Holothuria atra is an omnivore, sifting through the sediment with its tentacles and feeding on detritus and other organic matter.
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Holothuria atra, commonly known as the black sea cucumber or lollyfish, is a species of marine invertebrate in the Holothuriidae family.
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Holothuria tubulosa is dioecious, with each individual being either male or female but with no difference between them in external appearance.
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More examples
Type genus of the Holothuridae
Holothuria is a genus of marine animals of Holothuroidea, found in tropical and temperate regions coastal waters. They are soft bodied, armless invertebrates that dwell on the ocean floor, the form resembles a cucumber.