Georgette Douwma / Yellow sea cucumbers (Colochirus robustus) feeding in current. Triton Bay, West Papua, Indonesia.

Linda Pitkin / Leather coral (Sarcophyton sp.), on a rock with soft corals and Yellow Sea Cucumbers (Colochirus robustus), Triton Bay, near Kaimana, West Papua, Indonesia

Linda Pitkin / Sea Cucumber (Colochirus robustus) Rinca, Komodo National Park, Indonesia

Solvin Zankl / Yellow sea cucumber (Colochirus robustus) on coral reef, Raja Ampat, West Papua, Indonesia, Pacific Ocean.

Franco Banfi / Sea cucumber (Colochirus robustus) Friwinbonda Point, Kri island, Raja Ampat, Irian Jaya, West Papua, Indonesia, Pacific Ocean

Georgette Douwma / Composite image of marine invertebrates on black background. Top row from left: Tube anemone (Ceriantharia), Yellow sea cucumber (Colochirus robustus), Nudibranch (Nembrotha lineolata), Squat shri...

Georgette Douwma / Composite image of echinoderms on black background. top left to right: Pineapple sea cucumber (Thelenota ananas), Yellow sea cucumber (Colochirus robustus), Frianti's starfish (Nardoa frianti),...

Georgette Douwma / Composite image of echinoderms on black background. Top row from left: Featherstar (Crinoidea), Sea apple (Pseudocolochirus violaceus). Central row from left: Mosaic cushion star (Halityle regu...

Georgette Douwma / Composite image of echinoderms on black background. SEA CUCUMBER row from left: Pineapple sea cucumber (Thelenota ananas), Leopard sea cucumber (Bohadschia argus), Yellow sea cucumber (Colochirus...

Georgette Douwma / Composite image of echinoderms on black background. Species present: - Top row from left: Yellow sea cucumber (Colochirus robustus) and Lampert's sea cucumber (Synaptula lamperti), Black sea c...