Franco Banfi / Sea star (Hacelia attenuata) on coral covered with mucilage, a symptom of rising sea temperature, Vis Island, Croatia, Adriatic Sea, Mediterranean.

Sean Crane / Bat Star (Asterina miniata) trio at low tide, Montana De Oro State Park, Los Osos, California

Luciano Candisani / Cushioned Star (Oreaster reticulatus), Gipoia Island, Ilha Grande, Brazil

Sue Daly / Red sea star (Echinaster sepositus) and bryozoans fauna. Channel Islands, UK July. Highly commended, 'Habitat' category, British Wildlife Photography Awards (BWPA) competition 2012.

Alex Mustard / 2020VISION / Common / Red sunstar (Crossaster papposus) amongst Dead man's fingers (Alcyonium digitatum) on a rocky reef, beneath kelp. Shetland Islands, Scotland, UK, June.

Juergen Freund / Friant's sea star (Nardoa frianti), close-up of skin of the upper side. North Raja Ampat, West Papua, Indonesia.

Wild Wonders of Europe / Muñoz / Starfish on Dail Beag Beach at low tide, Lewis, Outer Hebrides, Scotland, UK, June 2009

Wild Wonders of Europe / Muñoz / Starfish on rock at low tide, Dail Beag Beach, Lewis, Outer Hebrides, Scotland, UK, June 2009

Constantinos Petrinos / A new Starfish {Fromia} regenerates from detached arm, Sulawesi Indonesia. NB will have 6 arms instead of normal 5

Flip Nicklin / Sea Star, Anemones and Coralline Algae living 40 feet below the water surface, Admiralty Inlet, Lancaster Sound, Nunavut, Canada

Fred Bavendam / Firebrick Sea Star (Asterodiscides truncatus) portrait, underwater, Jarvis Bay, New South Wales, Australia

Georgette Douwma / Luzon starfish (Echinaster luzonicus) lying on leather coral. West Papua, Indonesia. Indo-West Pacific.