Solvin Zankl / Echinopluteus larvae. Pluteus larvae occur during the life cycles (ontogenesis) of sea urchins and brittle stars that belong to the echinoderms. Raunefjorden near Bergen, Norway.
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Andy Murch / Happy Eddy (Haploblepharus edwardsii) amongst Cape sea urchin (Parechinus angulosus) and starfish. False Bay, Western Cape, South Africa. June.
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Tui De Roy / Galapagos sea lions (Zalophus wollebaeki) sub adult males playing with starfish, Mosquera Islet, Galapagos.
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Shane Gross / Panamic Cushion Sea Star (Pentaceraster cumingi) and a school of Yellow-tailed Grunt (Anisotremus interruptus), Galapagos Island, Ecuador. December.
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Georgette Douwma / Crinoid (Crinoidea) on Soft coral (Alcyonacea). Derawan Islands, East Kalimantan, Indonesia.
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Alex Mustard / Commensal emperor shrimp (Periclimenes imperator) moves across the colourful red patterned surface of its host Candycane sea cucumber (Thelenota rubralineata). Misool, Raja Ampat, West Papua, Indonesi...
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Juergen Freund / Timelapse of Giant sea cucumbers (Thelenota ananas) moving underwater, with a Giant clam (Tridacna gigas) in the background, Great Barrier Reef, Queensland, Australia, 2015.
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Alex Mustard / California sea lion (Zalophus californianus) uses a Panamic cushion star (Pentaceraster cumingi) as a toy. The sealions pick up the starfish and then drop them and chase after them as they sink. Los I...
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Georgette Douwma / Chocolate chip sea star o (Protoreaster nodosus) on sandy bottom. Mabul, Malaysia.
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Franco Banfi / Sea star (Hacelia attenuata) on coral covered with mucilage, a symptom of rising sea temperature, Vis Island, Croatia, Adriatic Sea, Mediterranean.
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Franco Banfi / Crinoids (Oxycomanthus bennetti) Menjangan Island, Bali Island, Indonesia, Pacific Ocean
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Georgette Douwma / Blue starfish (Linckia laevigata) Malaysia.
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Solvin Zankl / Deepsea Basket star (Gorgonocephalus lamarckii) specimen, from the North Atlantic near Iceland.
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Georgette Douwma / Crinoid (Crinoidea) on artificial reef. Mabul, Malaysia.
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Georgette Douwma / Crinoid (Crinoidea) on artificial reef. Mabul, Malaysia.
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Georgette Douwma / Granulated sea star (Choriaster granulatus) on artificial reef. Mabul, Malaysia.
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Nick Upton / Timelapse of a Common starfish (Asterias rubens) moving in a rockpool, speeded up four times, Cornwall, England, UK, September.
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Nick Upton / Common starfish (Asterias rubens) moving in a rockpool, real time, Cornwall, England, UK, September.
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Constantinos Petrinos / Yellow stripe clingfish (Diademichthys lineatus) living in association with the Fire Urchin (Astropyga radiata) Lembeh Strait, North Sulawesi, Indonesia.
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Richard Robinson / Featherstar (Crinoidea) on red coral (Errina novazelandiae) in Doubtful Sound, Fiordland National Park, New Zealand.
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Sue Daly / Close-up of the limbs of a Spiny starfish (Marthasterias glacialis) showing its many tube feet moving over the seabed, Sark, British Channel Islands, UK, August.
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Sue Daly / Spiny starfish (Marthasterias glacialis) moving its arms over the seabed, showing use of its tube feet, Sark, British Channel Islands, UK, August.
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Sue Daly / Close-up of a Seven rayed starfish (Luidia ciliaris) moving over the seabed, showing use of its tube feet to walk, Sark, British Channel Islands, UK, August.
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Sue Daly / Seven rayed starfish (Luidia ciliaris) moving over the seabed, showing use of its tube feet to walk, Sark, British Channel Islands, UK, August.
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Brandon Cole / Red Sea Urchins (Stronglyocentrotus franciscanus) and Purple Sea Urchins (Stronglyocentrotus purpuratus) feeding on bottom algae and Giant kelp (Macrocystis pyrifera), Channel Islands National Marine...
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Alex Mustard / Plumose anemones (Metridium senile) and common starfish (Asterias rubens) beneath the sun in a Norwegian Fjord. Gulen, Bergen, Norway. North East Atlantic Ocean.
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Juan Carlos Munoz,Juan Carlos Munoz / Starfish Beach, with many starfish in the shallow sea (Asteroidea) Colon Island, Bocas del Toro Archipelago, Bocas del Toro Province, Panama,
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David Fleetham / Raccoon butterflyfish (Chaetodon lunula), endemic Saddle wrasse (Thalassoma duperrey) and Sea urchin (Diadema sp.) on reef, Lanai, Hawaii, Pacific Ocean.
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Joel Sartore / Photo Ark / Imperial urchin (Phyllacanthus imperialis) moving across the frame, Oklahoma Aquarium. Captive.
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Sirachai Arunrugstichai / Crown-of-thorns starfish (Acanthaster planci) feeding on a colony of encrusting coral, leaving white skeleton in the shallow reef, Andaman Sea, Mu Koh Similan National Park, Phang-nga, Thailand.
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SCOTLAND: The Big Picture / Yarrell's blenny (Chirolophis ascanii) swimming past Common sea urchin (Echinus esculentus) attached to a rocky reef, Lerwick, Shetland, Scotland, North Atlantic Ocean, UK.
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SCOTLAND: The Big Picture / Two Common sea urchins (Echinus esculentus) graziing on kelp stipes, Lerwick, Shetland, Scotland, North Atlantic Ocean, UK.
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SCOTLAND: The Big Picture / Common sea urchin (Echinus esculentus) and a Common starfish (Asterias rubens) feeding on the sea bed, Spiggy, Shetland, Scotland, North Atlantic Ocean, UK.
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SCOTLAND: The Big Picture / Long-spinned sea scorpion (Taurulus bubalis) and Common sea urchin (Echinus esculentus) on a bed of Common brittle stars (Ophiothrix fragilis), Lerwick, Shetland Islands, Scotland, North Atlantic Ocea...
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SCOTLAND: The Big Picture / Common sun star (Crossaster papposus) roaming a rocky reef with Common brittle stars (Ophiothrix fragilis) and Common sea urchin (Echinus esculentus), Lerwick, Shetland, Scotland, North Atlantic Ocean...
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David Fleetham / Close up of the tube feet of a Purple velvet seastar (Leiaster leachi), extending from the protective crevice in one of its arms, Maui, Hawaii, Pacific Ocean.
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Joel Sartore / Photo Ark / Pfaffenhut sea urchin (Tripneustes gratilla) moving slowly using tube feet, Berlin Aquarium. Captive.
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Joel Sartore / Photo Ark / Pfaffenhut sea urchin (Tripneustes gratilla) tube feet moving in the water, Berlin Aquarium. Captive.
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Joel Sartore / Photo Ark / Crown of thorns starfish (Acanthaster planci) moving down, showing its tube feet, Denver Zoo. Captive.
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Joel Sartore / Photo Ark / Florida sea cucumber (Holothuria floridana) close up moving its tube feet, Butterfly Pavillion. Captive.
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Joel Sartore / Photo Ark / Leather sea star (Dermasterias imbricata) moving, showing tube feet under arms, Aquarium of the Pacific. Captive.
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Sergio Hanquet / Sea cucumber (Holothuria sanctori) aggregating on algae covered rock, Tenerife, Canary Islands.
Georgette Douwma / Multipore starfish (Linckia multifora) on black background, regenerating arms, West Papua, Indonesia, Indo-Pacific.
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Georgette Douwma / Severed arm of Porous starfish (Fromia milleporella) on black background, regenerating six arms, West Papua, Indonesia, Indo-Pacific.
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Georgette Douwma / Severed arm of Multipore Starfish (Linckia multifora), on black background, regenerating, West Papua, Indonesia, Indo-Pacific.
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Georgette Douwma / Crown-of-thorns starfish (Acanthaster planci), on black background, Bunaken National Park, Sulawesi, Indo-Pacific.
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Georgette Douwma / Ochre sea star (Pisaster ochraceus) on black background, Olympic National Park, Washington, USA, Pacific Ocean.
