Gary Bell/ Oceanwide / Sea Goldie (Pseudanthias squamipinnis) school in coral reef with feather stars, Great Barrier Reef, Queensland, Australia

David Fleetham / Crinoid shrimp (Periclimenes amboinensis) on matching Feather star (Comanthus bennetti) Philippines.

David Shale / Deepsea Featherstar (Crinoidea) on Primnoid coral seafan from a coral seamount in the Indian Ocean, December 2011

Juergen Freund / Featherstars / crinoids attached to Gorgonian coral, West New Britain, Papua New Guinea.

Juergen Freund / Featherstar (Comantheria briareus) on red fancoral. Misool, Raja Ampat, West Papua, Indonesia.

Juergen Freund / Feather star (Crinoidea) underside. Misool, Raja Ampat, West Papua, Indonesia

Juergen Freund / Feather star (Crinoidea) underside. Misool, Raja Ampat, West Papua, Indonesia.

Georgette Douwma / Featherstar (Crinoidea) on coral with shoal of Surgeonfish swimming in the background, Moto Mount, Indonesia

Georgette Douwma / Squat lobster (Allogalathea elegans) on featherstar, Solomon Islands. Did you know? There are over 900 species of Squat lobster in the world - most of which live around hydrothermal vents.

Michele Westmorland / Diver at healthy reef system with large Barrel sponge (Xestospongia testudinaria) covered with crinoids / feather stars (Oxycomanthus bennetti). Mulloway's Reef, Tufi, Papua New Guinea, model released...

Georgette Douwma / Ornate ghostpipefish {Solenostomus paradoxus} camouflaged amongst crinoids, Lembeh Strait, Sulawesi, Indonesia

Juergen Freund / Feather star {Lamprometra sp} Indo Pacific