Echinodermata Collection

Male Leach's sea star (Leiaster leachi) broadcast spawning, releasing streams of sperm from its arms. Kagoshima Prefecture, Kyushu, Japan

Mouth of Common Sea Urchin (Echinus esculentus) Guillaumesse, Sark, British Channel Islands

Necklace seastar (Fromia monilis) on Sea cucumber (Bohadaschia argus) Yap, Micronesia

Pearlfish (Carapus acus) in anus of Sea cucumber (Stichopus regalis). These species have a commensal relationship, with the fish living in the gut of the sea cucumber. Catalonia, Spain

Starfish Beach, with many starfish in the shallow sea (Asteroidea) Colon Island, Bocas del Toro Archipelago, Bocas del Toro Province, Panama

Purple sea star (Pisaster ochraceus) in shallow water beneath forest. Browning Pass, Vancouver Island, British Columbia, Canada. North East Pacific Ocean

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

Cushion star (Culcita novaeguineae), detail, Triton Bay, West Papua, Indonesia, Pacific Ocean

Crinoid or feather star (Antedon mediterranea) on Violescent sea whip or Red sea fan (Paramuricea clavata) Punta Campanella Marine Protected Area, Amalfi Coast, Italy, Tyrrhenian Sea, Mediterranean

Slate pencil sea urchins (Heterocentrotus mammillatus) on coral reef with Pyramid butterflyfish (Hemitaurichthys polylepis), Hawaii

Purple and Ochre sea stars (Pisaster ochraceus) preying on Pacific blue mussels (Mytilus trossulus). Also seen are Green Surf Anemones (Anthopleura xanthogrammica)

Red starfish (Echinaster sepositus) group on sea floor, Tenerife, Canary Islands

Blue starfish (Coscinasterias tenuispina) close up of arm with tube feet, Tenerife, Canary Islands

Atlantic feather star (Antedon bifida) Tenerife, Canary Islands

Panamic Cushion Sea Star (Pentaceraster cumingi) and a school of Yellow-tailed Grunt (Anisotremus interruptus), Galapagos Island, Ecuador. December

Slate pencil sea urchins (Heterocentrotus mammillatus) in Hawaiian reef scene with Black triggerfish (Melichthys niger) Hawaii

Purple sea urchin (Sphaerechinus granularis), three of different colours. Tenerife, Canary Islands

Kaleidoscopic image of crinoids or feather stars. Indonesia

Horse mussel (Modiolus modiolus) bed with Brittlestars (Ophiothrix fragilis) and Edible crab (Cancer pagurus), Shetland, Scotland, UK, September

Sea cucumber / Sea apple (Pseudocolochirus violaceus) Rinca, Komodo National Park, Indonesia

Sea apple (Pseudocolochirus violaceus) Komodo National Park, Indonesia

Crinoid (Crinoidea) on artificial reef. Mabul, Malaysia

Chocolate chip sea star o (Protoreaster nodosus) on sandy bottom. Mabul, Malaysia

Kaleidoscopic image of Feather stars (Crinoidea) and Gorgonian wrapper anemone.(Nemanthus annamensis). Indonesia. Western Pacific

Sea apple, eating, using arm to transfer food into mouth. Ninepin Group or Kwo Chau Islands, Sai Kung District of Hong Kong, China

High magnification photo of the spines of a Common starfish (Asterias rubens). Gulen, Bergen, Norway. North Sea, North East Atlantic Ocean

Sea cucumber (Bohadschia argus) which has ejected a part of its internal organs called Cuvierian tubules. These significantly sticky strings are a defense mechanism designed to deter predators

Pearlfish (Carapus acus) outside of host Sea cucumber (Stichopus regalis) at night. These species have a commensal relationship, with the fish living in the gut of the sea cucumber. Catalonia, Spain

Plumose anemones (Metridium senile) and common starfish (Asterias rubens) beneath the sun in a Norwegian Fjord. Gulen, Bergen, Norway. North East Atlantic Ocean

Coleman shrimp (Periclimenes colemani) close up, on a fire urchin (Asthenosoma varium). Anilao, Batangas, Luzon, Philippines. Verde Island Passages, Tropical West Pacific Ocean

Starfish close up detail, Blairgowrie, Mornington Penisular, Victoria, Australia. Port Philip Bay, Bass Strait

Blue sea star (Linckia laevigata) on coral reef, Fiji, South Pacific

RF - Long-spined sea urchin (Astropyga radiata). Lembeh Strait, North Sulawesi, Indonesia

Deep red Feather star shrimp (Hippolyte prideauxiana) crawling secretly amongst the arms of a Feather star (Antedon bifida), Loch Duich, Highands, Scotland, UK

Pair of Coleman shrimps (Periclimenes colemani) living in a fire urchin (Asthenosoma varium). The female is the larger shrimp

Panamic cushion sea star (Pentaceraster cumingi) detail. Huatulco Bays National Park, Oaxaca state, Mexico, Pacific Ocean. November

Sea star (Odontaster validus) on Ribbon kelp (Durvillaea antarctica), Antarctic Peninsula, Antarctica, Southern Ocean

Horned sea star / Chocolate chip sea star (Protoreaster nodosus) on the rocky seabed, Isabela Island, Galapagos Islands, Pacific Ocean

Raccoon butterflyfish (Chaetodon lunula), endemic Saddle wrasse (Thalassoma duperrey) and Sea urchin (Diadema sp)
Raccoon butterflyfish (Chaetodon lunula), endemic Saddle wrasse (Thalassoma duperrey) and Sea urchin (Diadema sp.) on reef, Lanai, Hawaii, Pacific Ocean

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

Suensons brittle star (Ophiothrix suensonii) on Azure vase sponge (Callyspongia plicifera), St. Vincent, Caribbean

Honeycomb / Cushion starfish (Pentaceraster alveolatus) composite image on black background showing colour variations Malapascua Island, Philippines, Indo-Pacific species

Sea star (Asterias rubens) on kelp, Vevang, Norway, Atlantic Ocean

Close up look between the spines of a Slate pencil sea urchin (Heterocentrotus mammillatus), Hawaii, Pacific Ocean

Ten-lined urchin (Eucidaris metularia) nestled on a reef, close up, Hawaii, Pacific Ocean

Slate pencil sea urchin (Heterocentrotus mammillatus) on a reef with Black triggerfish (Melichthys niger) and a Bluestripe snapper (Lutjanus kasmira) swimming above, Maui, Hawaii, Pacific Ocean

Close up of three arms from a Feather star (Crinoidea), Triton Bay, West Papua, Indonesia, Pacific Ocean

Common starfish (Asterias rubens) with pink encrusting algae, Farne Islands, Northumberland, UK, North Sea

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