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Single purple sea urchin in the middle of coral reef tank in an aquarium
Sea urchin on a male hand. Shor underwater.
Backlighting of a common purple sea urchin on a reef at California's Channel Islands National Park brings out its true beauty.  Spines are to protect itself from predators.
Asthenosoma varium is a large urchin (25 cm) with flattened, flexible test (the plates are articulated rather than fused). Very mobile, short spines, arranged in rectangular areas, separated by spineless areas. Spines have a blue swelling close to the tip, filled with venom.Living in bay, lagoon, external reef; on sandy or rubble bottoms. The flexible test allows, changing the shape, to enter very narrow crevices. The swollen shape of the spines and the flexible test are unique features. \nAsthenosoma varium sting can be very painful, a strong local pain due to venom injection can last for hours.\nThis specimen was encountered in a very shallow tunnel in the Triton Bay, Indonesia \n3°54'51.39 S 134°7'24.81 E at 2m depth
Common Sea Urchin, Paracentrotus lividus, Cabo Cope Puntas del Calnegre Natural Park, Mediterranean Sea,  Murcia, Spain, Europe
Clownfish sheltering in an anemone while snorkelling a coral reef
Plate LPS Coral
Corallium rubrum and two Castagnola (Chromis Chromis)
Magical Aruba underwater Pictures
Anthopleura xanthogrammica, or the giant green anemone, is a species of intertidal sea anemone of the family Actiniidae. Other  names for this anemone include green surf anemone, giant green sea anemone, green anemone, giant tidepool anemone, anemone, and rough anemone.  Salt Point State Park, California.
Underwater photo of Purple Sea Urchin in natural habitat the sea with yellow coral in background. Blue sea
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
Sea urchin
Sea life, close up, macro   Beautiful multicolored white, purple and orange Nudibranch. Underwater beauty Scuba diver point of view. Underwater photo.
A shot of a sea anemone
Bunte Unterwasserwelt
sea bottom with fish and algae as a background
Strawberry anemone,  Corynactis californica is a brightly colored colonial anthozoan corallimorph. Club-tipped anemone and strawberry corallimorpharian.  Monterey Bay, California.
A close-up shot of a sea urchin lying on a beach of white pebbles. The sea urchin is in focus, while the background is blurred, creating a shallow depth of field. The image is perfect for illustrating the beauty of marine life and the natural world.
A multi colored sea urchin is just below the water’s surface.
Corals in the form of tentacles on a reef.
Underwater Red Scorpionfish fish deep in sea Sea life Mediterranean sea Scorpaena scrofa Scuba diver point of view
Blue sea urchin on glass in a marine aquarium
False Clown Anemonefishes Amphiprion ocellaris are hiding in the tentacles of a Sea Anemone Heteractis magnifica. \nAmphiprion ocellaris inhabits shallow and calm tropical lagoons of the Indo-Malaysian region, from the Ryukyu Islands, Japan, throughout South-east Asia and south to Australia in a depth range from 1-15m, usually 3-15m, max. length 11cm. It is one of the most popular marine aquarium fishes. \nHeteractis magnifica occurs in the Indo-Pacific Ocean, from the Red Sea to Samoa, in South East Asia, Northern Australia and the Western Pacific Regions, from Australia to the Ryukyu Islands in a depth range from 1-50m depth preferring the temperature range from 24-32 °C. Heteractis magnifica is the 2nd largest of all sea anemones. The oral disc reaches 100cm, but typical is 30-50cm. In captivity, the longest lifespan is 80 years, in the wild it is unknown, but its estimated that some individuals are hundreds of years old! Triton Bay, Kaimana Regency, Indonesia, 4°2'33.4058 S 134°14'12.0248 E at 6m depth
feeding common sea urchin on a black background in Kinlochbervie, Scotland, United Kingdom
Crown of thorns starfish, Acanthaster ellisii, Sea of Cortez, Mexico. Sea star. Red and orange starfish on a rock.
European edible sea urchin (Echinus esculentus), also known as the common sea urchin.
A pink sea urchin is just below the water’s surface.
Sea urchin, Family Echinometridae, Echinometra mathaei underwater Big Island Hawaii
A sunburst sea anemone in a tidal pool on the coast of Newport Beach, California during the winter.
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