Pete Oxford / Blackspotted sea cucumber (Bohadschia graeffei) on coral reef, Fiji, South Pacific.

Georgette Douwma / Graeff's sea cucumber (Bohadschia graeffei) has climbed on top of a coral boulder to spawn, Andaman Sea, Thailand

Georgette Douwma / Graeff's sea cucumber (Bohadschia graeffei) has climbed on top of a coral boulder to spawn, Andaman Sea, Thailand

Georgette Douwma / Graeff's sea cucumber (Bohadschia graeffei) has climbed on top of a coral boulder to spawn, Andaman Sea, Thailand

Georgette Douwma / Graeff's sea cucumber (Bohadschia graeffei) Andaman Sea, Thailand.

Juergen Freund / Graeff's sea cucumber (Bohadschia graeffei) Kimbe Bay, West New Britain, Papua New Guinea

Juergen Freund / Prickly Sea Cucumber (Bohadschia graeffei) feeding on seabed, Lembeh Strait, North Sulawesi, Indonesia

GEORGETTE DOUWMA / Graeff's sea cucumber (Bohadschia graeffei) Indonesia

Sue Daly / Sea cucumber (Bohadschia graeffei) Lembeh Straits, Sulawesi, Indonesia

Georgette Douwma / Sea cucumber (Bohadschia graeffei) on coral reef with a Sea apple, sponges and crinoids, Rinca, Indonesia

Juergen Freund / Dried and shrunken Sea cucumber {Bohadschia graeffei} formerly 1-2 feet long, Sulawesi, Indonesia

Juergen Freund / Dried and shrunken Sea cucumbers {Bohadschia graeffei} formerly 1-2 feet long, Sulawesi, Indonesia