Un identified shrimp on Cushion sea star, Oreaster reticulatus, Angra, Rio de Janeiro, Brazil.

Sea scape with Cushion sea star, Oreaster reticulatus, Zoanthid, Parazoanthus sp., and octocorlas, Angra, Rio de Janeiro, Brazil, South Atlantic Ocean

Annulobalcis aurisflamma, an ectoparasite on the crinoid, Tropiometra carinata, Angra, Rio de Janeiro, Brazil.

Splitfield, Over under, Wakatobi Dive Resort, Palm trees, and blue sea star, Linkia laevigata, Onemoba'a, Tomia, Kepulauan Wakatobi National park, Southeast Sulawesi, Indonesia, Banda Sea, Indian Ocean.

Splitfield, Over under, Wakatobi Dive Resort, Palm trees, and blue sea star, Linkia laevigata, Onemoba'a, Tomia, Kepulauan Wakatobi National park, Southeast Sulawesi, Indonesia, Banda Sea, Indian Ocean.

Splitfield, Over under, Palm trees, straw huts and blue sea star, Linkia laevigata, Onemoba'a, Tomia, Kepulauan Wakatobi National park, Southeast Sulawesi, Indonesia, Banda Sea, Indian Ocean.

Splitfield, Over under, Palm trees, snorklers, and blue sea star,Linkia laevigata, Onemoba'a, Tomia, Kepulauan Wakatobi National park, Southeast Sulawesi, Indonesia, Banda Sea, Indian Ocean.

Sand background and blue sea star,Linkia laevigata, Onemoba'a, Tomia, Kepulauan Wakatobi National park, Southeast Sulawesi, Indonesia, Banda Sea, Indian Ocean.

Splitfield, Over under, Palm trees, and blue sea star,Linkia laevigata, and snorkelers, kids, Onemoba'a, Tomia, Kepulauan Wakatobi National park, Southeast Sulawesi, Indonesia, Banda Sea, Indian Ocean.

Splitfield, Over under, Palm trees, and blue sea star,Linkia laevigata, Onemoba'a, Tomia, Kepulauan Wakatobi National park, Southeast Sulawesi, Indonesia, Banda Sea, Indian Ocean.

Splitfield, Over under, Palm trees, and blue sea star, Linkia laevigata, Onemoba'a, Tomia, Kepulauan Wakatobi National park, Southeast Sulawesi, Indonesia, Banda Sea, Indian Ocean.

Squat lobster, Galathea sp, and Sea lilly, Antedon petasus, Gulen, Sogn og fjordane, Norway.

Norther sea urchin, Strongylocentrotus droebachiensis, or possibly Strongylocentrotus pallidus, Diver under sea ice, Aurland, Sogn og fjordane, Norway

Common starfish, Asterias rubens, under sea ice, Nærøyfjorden, Fjord, Aurland, Sogn og fjordane, Norway.

Common starfish, Asterias rubens, and diver, Nærøyfjorden, Fjord, Aurland, Sogn og fjordane, North Atlantic Ocean, Norway.

Under sea ice, Edible sea urchin, Echinus esculentus, Nærøyfjorden, Aurland, Sogn og fjordane, Norway

Spiny starfish, Marthasterias glacialis ,Sea penn, Virgularia mirabilis, Sørfjorden, Bergen, Hordaland, Norway.

Plumose anemones, Metridium senile, the Common Sea Star or Common Starfish (Asterias rubens), Saithe, Pollock, Pollachius virens, and dabberlocks or badderlocks, or winged kelp, Alaria esculenta, Raftsundet, Hadsel, Nordland, Norway.

Plumose anemones, Metridium senile, Saithe, Pollock, Pollachius virens, and green sea urchin, Strongylocentrotus droebachiensis, Raftsundet, Hadsel, Nordland, Norway.

Seacucumber, Stichopus tremulus, spawning behavior, Takvam, Sørfjorden, Bergen, Hordaland, Norway.

Seacucumber, Stichopus tremulus, spawning behavior, Takvam, Sørfjorden, Bergen, Hordaland, Norway.

White sea urchin, Echinus acus, Hardanger fjord, Folkedal, Granvin, Hordaland, Norway.

Brachiolaria larvae of the The Common Sea Star or Common Starfish, Asterias rubens, Sørfjorden, Takvam, Bergen, Hordaland, Norway.

Brachiolaria larvae of the The Common Sea Star or Common Starfish, Asterias rubens, Sørfjorden, Takvam, Bergen, Hordaland, Norway.

Brachiolaria larvae of the The Common Sea Star or Common Starfish, Asterias rubens, Sørfjorden, Takvam, Bergen, Hordaland, Norway.

Montagu's sea snail, Liparis montagui, and Common sea star, Asterias rubens, Stokmarknes, Hadsel, Nordland, Norway.

White Sea Urchin, Echinus acutus, Juvenile, Stokmarknes, Hadsel, Nordland, Norway.

Kelpforest in winter, Laminaria hyperborea, Epifauna, Bryozoa, and Starfish, Phorania pulvillus, Sotra, Hordaland, Norway.

Kelpforest in winter, Laminaria hyperborea, Epifauna, Bryozoa, and Starfish, Phorania pulvillus, Sotra, Hordaland, Norway.

Kelpforest in winter, Laminaria hyperborea, Epifauna, Bryozoa, and Starfish, Phorania pulvillus, Sotra, Hordaland, Norway.

Brittlestar, Ophiuroidea sp., living symbiotic on seacucumber, Stichopus tremulus, Bergen, Hordaland, Norway.

Nudibranch, Flabellina pedata, and European Edible Sea Urchin, Echinus esculentus, Øygarden, Hordaland, Norway.

Dead mens fingers, Alcyonium digitatum, Sea urchin, Echinus esculentus, and Common sun star, Crossaster papposus, Øygarden, Hordaland, Norway.

Common starfish, Asterias rubens, on Angler fish eye, Lophius piscatorius, Øygarden, Hordaland, Norway.

Pelagic stage of Luidia sarsi, Øygarden, Hordaland, Norway.

Pelagic stage of Luidia sarsi, Øygarden, Hordaland, Norway.

Common starfish, Asterias rubens, ice, Nærøyfjorden, Aurland, Sogn og Fjordane, Norway, North Atlantic Ocean

Dead mens fingers, Alcyonium digitatum, and Kelp, Laminaria hyperborea and Diver, Fosen straumen, Radøy, Hordaland, Norway

Lyre Crab, Hyas coarctatus, on Sea urchin detail, Echinus esculentus, Øygarden, Hordaland, Norway.

Seacucumber, Psolus phantapus, Nærøyfjorden, Sogn og Fjordane, Norway.

Diver, Sea urchin, Echinus esculentus, Dead mens fingers, Alcyonium digitatum, and Kelp, Laminaria hyperborea, Øygarden, Hordaland, Norway, North Atlantic Ocean

Diver, Kelp, Laminaria hyperborea, and Edible sea urchin, Echinus esculentus, Kristiansund, Møre og Romsdal, Norway, North Atlantic Ocean

Common starfish, Asterias rubens, on Dead mens fingers, Alcyonium digitatum, Fosen Straumen, Radøy, Hordaland, Norway

Common starfish, Asterias rubens, feeding on horse mussel, Modiolus modiolus, Fosen Straumen, Radøy, Hordaland, Norway.

Diver, Nudibranch, Flabbelina pellucida, Tubularia indvisa, Common sun star, Crossaster papposus, Yellow sun star, Solaster endeca, and Painted topshell, Calliostoma zizyphinum, Gulen, Sogn og fjordane, Norway.

Feather Star Shrimp, Hippolyte prideauxiana, Islas Medas, L'Estartit, Costa Brava, Spain, Mediterranean Ocean

Sea cucumber swimming crab, Lissocarcinus orbicularis, Bootless Bay, Port Moresby, National Capital District, Papua New Guinea

Sea cucumber swimming crab, Lissocarcinus orbicularis, Bootless Bay, Port Moresby, National Capital District, Papua New Guinea