Holothuriidae Collection

Necklace seastar (Fromia monilis) on Sea cucumber (Bohadaschia argus) Yap, Micronesia

Sea cucumber (Bohadschia argus) which has ejected a part of its internal organs called Cuvierian tubules. These significantly sticky strings are a defense mechanism designed to deter predators

RF - Emperor shrimp (Periclimenes imperator) exploring alien-looking landscape of host sea cucumber (Bohadschia argus). Emperor shrimps are commensals on many hosts

Sea cucumber feeding on algae
Sea cucumber (Bohadschia graeffei) feeding on algae, Beqa Lagoon, Fiji

A sea cucumber clings to a reef in Alor, Indonesia
A sea cucumber (Bohadschia sp.) clings to a reef in Alor, Indonesia. This remote region is known for its beautiful reefs and spectacular marine biodiversity

Close-up pattern of a giant sea cucumber (Thelenota ananas), Beqa Lagoon Fiji

Lollyfish Sea Cucumber (Holothuria atra) adult, Nusa Penida, Bali, Lesser Sunda Islands, Indonesia, October

Light-sensitive Sea Cucumber (Holothuria impatiens) adult, extruding sticky defensive cuivierian respiratory tubules at night, Manado, Sulawesi, Greater Sunda Islands, Indonesia, March

Brown Sandfish Sea Cucumber (Bohadschia vitiensis) adult, extruding white sticky cuivierian tubules in defensive behaviour, Lembeh Straits, Sulawesi, Sunda Islands, Indonesia, January

Sea cucumber in the Maldives
A blackspotted sea cucumber, Bohadschia graeffei, with its head stretched upwards showing feeding tentacles. Photographed at South Ari Atoll, Maldives

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Holothuriidae, also known as sea cucumbers, are fascinating and essential invertebrates found in various marine habitats around the world. With their elongated, cylindrical or oval bodies, these creatures move along the seafloor using their tube feet. Holothuriids feed on detritus and microorganisms, playing a crucial role in maintaining the health of their ecosystems by breaking down organic matter and recycling nutrients. Some species possess the unique ability to regenerate their bodies if cut into pieces, ensuring their survival even in the face of predation. Holothuriids are also known for their economic importance, with some species being harvested for food, particularly in Asia, where they are considered a delicacy. Despite their importance, these gentle creatures face numerous threats, including overfishing, habitat destruction, and pollution, making conservation efforts crucial for their continued survival.