Sea star shimp (Periclimenes soror), on a crown-of-thorns starfish (Acanthaster planci), Yap, Micronesia, Pacific

A sea star shimp (Periclimenes soror), swims through a forest of spines on the back of a crown-of-thorns starfish, Micronesia, Pacific

Scavenging sea stars and a humpback shrimp (Pandalus hypsinotus) working on the remains of a rock crab, Canada, North America

Commensal Shrimp associated with Starfish, Periclimenes soror, Ambon, Moluccas, Indonesia

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.

Colourful shrimp (species currently unknown) gathered over a starfish.

Harlequin shrimp (Hymenocera picta) on a red starfish, Great Barrier Reef, a UNESCO World Heritage Site, Queensland, Cairns, Australia, Pacific Ocean

A Harlequin Shrimp (Hymenocera elegans) holding part of a blue seastar (Linkia laevigata) which it will feed on, Philippines

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