Red Spot Cardinalfish surrounding Featherstar, Apogon parvulus, Triton Bay, West Papua, Indonesia

Caribbean Coral Reef, Caribbean Sea, Dominica

Featherstar in Coral Reef, Triton Bay, West Papua, Indonesia

Scuba Diver over Coral Reef, Kai Islands, Moluccas, Indonesia

Red Whip Coral, Ellisella ceratophyta, Triton Bay, West Papua, Indonesia

Scuba Diver over Coral Reef, Kai Islands, Moluccas, Indonesia

Scuba Diver over Coral Reef, Kai Islands, Moluccas, Indonesia

Reef Scene with Crinoid and Fishes, Great Barrier Reef, Australia

Reef Scene with Crinoid and Fishes, Great Barrier Reef, Australia

Scuba Diver over Coral Reef, Kai Islands, Moluccas, Indonesia

Red Spot Cardinalfish surrounding Featherstar, Apogon parvulus, Triton Bay, West Papua, Indonesia

Crinoid under a Jetty, Comanthina sp., Ambon, Moluccas, Indonesia

Crinoid under a Jetty, Comanthina sp., Ambon, Moluccas, Indonesia

Colored Featherstars in Coral Reef, Comaster schlegeli, Kai Islands, Moluccas, Indonesia

Featherstars in Current, Comaster schlegeli, Tanimbar Islands, Moluccas, Indonesia

Featherstars in Current, Comaster schlegeli, Kai Islands, Moluccas, Indonesia

Colored Featherstars in Coral Reef, Comaster schlegeli, Kai Islands, Moluccas, Indonesia

Colored Featherstars in Coral Reef, Comaster schlegeli, Kai Islands, Moluccas, Indonesia

Crinoid sitting on Wire Coral, Siaes Wall, Micronesia, Palau

Crinoid sit on Sea Fan, Short Dropoff, Micronesia, Palau

Coral block with different stony corals (Scleractinia), Melithaea gorgonian (Melithaea sp.), Feather star, yellow (Crinoidea) and Sabre squirrelfish (Sargocentron spiniferum), three, Great Barrier Reef, Coral Sea, Pacific, Australia, Oceania

Both a Crinoid Commensal Shrimp (Periclimenes cornutus) and a Crinoid Squat Lobster (Allogalathea elegans) on a crinoid. These tiny crustaceans are commensal on crinoids or feather stars and take their color from the host, Philippines

Yellow Crinoid, Antedon mediterranea, Istria, Adriatic Sea, Croatia

Crinoid sitting on Wire Coral, Siaes Wall, Micronesia, Palau

Crinoid sit on Sea Fan, Short Dropoff, Micronesia, Palau