Gary Bell/ Oceanwide / Starfish (Uniophora granifera) on seagrass, Yorke Peninsula, South Australia, Australia

Gary Bell/ Oceanwide / Candy Cane Sea Star (Fromia monilis), Anilao, Philippines

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

Chadden Hunter / Brinicles (brine icicles or ice stalactites) forming under the ice, growing towards the sea floor, Ross Sea, McMurdo Sound, Antarctica. Taken on location for 'Winter' episode of the BBC Frozen Planet...

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

Konrad Wothe / Giant Green Sea Anemone (Anthopleura xanthogrammica) group, Goose Barnacles (Lepas anserifera) group and Ochre Sea Stars (Pisaster ochraceus) at low tide, Olympic National Park, Washington

Chris Newbert / Blue Sea Star (Linckia laevigata) and schooling baitfish, 20 feet deep, Papua New Guinea

David Shale / (Luidia sarsi) bipinnaria larva, late larval stage of starfish, deep sea Atlantic ocean

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

Patricio Robles Gil / Sea Star on rocky beach, Baja California, Mexico

Birgitte Wilms / Brittlestar (Ophiothrix sp) juvenile on Blue Sea Star (Linckia laevigata) Solomon Islands