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Closeup macro white and red Sea anemone from Oslo fjord Norwegian sea in blackwater
The aggregating anemone, Anthopleura elegantissima, or clonal anemone, is the most abundant species of sea anemone found on rocky Pacific coast of North America. This cnidarian hosts endosymbiotic algae called zooxanthellae.  Salt Point State Park, California.
Polychaeta Smooth tubeworm or red-spotted horseshoe (Protula tubularia) extreme close-up undersea, Aegean Sea, Greece, Halkidiki
Sea anemone in motion underwater.
Sea anemones, coral and other organisms growing in a rockpool on the volcanic rocks off the coast of the Fuerteventura, Canary Islands, Spain.
Sea life Spiral tubeworm Underwater beauty
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Sea anemone
Metridium senile
Sun Coral Tubastraea faulkneri is a large polyp stony coral from the family Dendrophyliidae. The species occurs all over the tropical Indo-Pacific Ocean in a wide depth range of 3-225 meters, often in greater densities on vertical walls and caves. \nThese corals are slow growers and they do not contribute to coral reef development. Unlike many tropical corals, they are azooxanthellate or non-photosynthetic, meaning that they do not live in symbiosis with zooxanthellae in their tissues, allowing them to grow in complete darkness as long as they can capture enough food, usually plankton. \nThey extend their translucent tentacles like these specimen during the late evening and the night, while during the day the tentacles are completely withdrawn. \nSeveral ascidian species, tubeworms, hydroids are there too.  \nTengah Island, Indonesia, 5°8'44.496 S 132°0'46.254 E at 8m depth
Swimming anemone at Whytecliff park
starfish lying on a rock with fish swimming alongside
Limidae or file shells are members of the only family of bivalve molluscs in the suborder Limoida.
Fire worm underwater Sea life  Scuba diver point of view
Underwater close-up photography of a tiger anemone.
Pachycerianthus fimbriatus is a cerianthid anemone that burrows in substrate and lives in a semi-rigid tube made of felted nematocysts. The tube-dwelling anemone contains stinging cells or nematocytes along its tentacles, however, the cells are not toxic to humans. Monterey Bay, California. Cnidaria.
Red tubifex worms in bottom of aquarium.
colorful Anemone flower sea and coral
Underwater scene from Cyprus
Blue Striped Tunicate Rhopalaea circula occurs in the Western Central Pacific in a depth range from 6-18m. Tunicates do not have backbones, but they are vertebrates, why? At some point in their life cycle, they have a tail, a central nerve cord, a pharyngeal gill cleft and a notochord. Often mistaken for sponges, it's simple to test: Tunicates have two siphons and when disturbed, they can rapidly close them. Palau 7°6'55.26 N 134°16'11.96 E at 25m depth, deeper than the usually noted 18m maximum depth.
Polychaeta Smooth tubeworm or red-spotted horseshoe (Protula tubularia) extreme close-up undersea, Aegean Sea, Greece, Halkidiki
Sea life  Yellow soft coral from scuba diver point of view
Anemone on a sandy bottom among a coral reef.
Brown hydra budding, Hydra oligactis. Fresh water, Diamond Lake, Oregon, USA. Live specimen, wet mount, 2.5X, oblique reflected illumination.
An image of several sea anemones in a cluster on the ocean floor during low tide.
Orange Cup Coral, Balanophyllia elegans,  California; Cnidaria;
Anemone actiniaria underwater looks like a flower.
Considering the size of the Solitary Tunicates Atriolum robustum in front, max. 1.5cm, the Dendronephthya Soft Coral is still quize small. \nTriton Bay, Kaimana Regency, West Papua Province, Indonesia \n3°57'4.944 S 134°8'1.032 E at 16m depth
The cylinder anemone or coloured tube anemone (Cerianthus membranaceus), Aegean Sea, Greece, Halkidiki
Sea life read and white worm Spiral tube worm Underwater beauty  Aquatic organism   Close up, macro photo. Scuba diver point of view
Free Images: "bestof:Black sea fauna actinia 01.jpg 44 0 43 17 N 28 40 6 4 E alt 0_source exif_heading Black Sea actinia own 2005-08-14 Florin DUMITRESCU Animals of Romania"
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