A tiny shrimp (Periclimenes soror) lives on a pin-cushion starfish in Raja Ampat, Indonesia. This remote, tropical region is home to extraordinary marine biodiversity.

Panamic cushion stars (Pentaceraster cumingi), gather on the sea floor, Sea of Cortez.

Panamic cushion star (Pentaceratser cumingi), in a scrum on Fernandina Island, Galapagos carpet (Sesuvium edmonstonei), Punta Pitt, San Cristobal Island, Galapagos, UNESCO World Heritage Site, Ecuador, South America

Panamic cushion star (Pentaceratser cumingi), in a scrum on Fernandina Island, Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

Pillow cushion star (Culcita novaeguineae), in the shallow rubble off Kri Island, Raja Ampat, Indonesia, Southeast Asia, Asia

Pillow cushion star (Culcita novaeguineae), in the shallow rubble off Kri Island, Raja Ampat, Indonesia, Southeast Asia, Asia

Shrimp camouflaged for life on the surface of a cushion star, Sabah, Borneo, Malaysia, Southeast Asia, Asia

Cushion star (Culcita novaguineae) skin texture, Ailuk atoll, Marshall Islands, Pacific

Cushion Sea Star (Oreaster reticulatus) Large starfish on sandy seabed, Cayman Islands, Caribbean.

Cushion starfish (Asterina gibbosa) rockpool Pembrokeshire Wales

Cushion Starfish Calcita novaeguineae. Gili Islands, Lombok, Indonesia

Common Cushion Stars Asterina gibbosa Castle Bay, Dale, Pembrokeshire, Wales, UK, Europe (rr)

Cushion starfish (Asterina gibbosa) rockpool Pembrokeshire Wales

Cushion star or starlet (Asterina gibbosa), St Brides, Pembrokeshire, Wales, UK, Europe

Cushion star, Culcita novaguineae, skin texture, Ailuk atoll, Marshall Islands, Pacific

Cushion star, Culcita novaguineae, skin texture, Small La Laguna, Puerto Galera, Mindoro, Philippines.

Underside with mouth of spiny cushion star (Culcita novaeguineae), Detail, Starfish, Pacific, Great Barrier Reef, Australia, Oceania

Lateral view of a Cushion Star (Culcita novaeguineae) resting on a reef off Maui; Maui, Hawaii, United States of America

Hawaii, Reticulated brittle star (ophiocoma brevipes) on cushion starfish (culcita novaeguineae).

Hawaii, Commensal Shrimp (periclemenes soror) and Reticulated Brittle Star (ophiocoma brevipes) on Cushion Starfish (culcita novaeguineae).

PANAMIC CUSHION STAR, PENTACERASTER CUMMUNGI, Ecuador, South America, Gal?pagos, Galapagos, Island, Pacific Ocean