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This image shows several sea urchins, with one opened to reveal its bright yellow insides. The sea urchin's shell is covered with black spines, creating a sharp contrast. The background consists of light-colored ice, highlighting the details of the sea urchin.
Plate LPS Coral
Underwater photo of Purple Sea Urchin in natural habitat the sea with yellow coral in background. Blue sea
Serene underwater environment surrounding Boracay Island, located in the Philippines. The image showcases a stone coral formation with a black urchin resting upon it. The black urchin is characterized by long, slender needles. The underwater scene features clear blue water with visible sunrays, adding a touch of natural illumination to the photograph.
Realy curious animal of the dark sea, this is a puffer fish, nicely isolated from its background.
Tropical salt water fish Striped burrfish (Chilomycterus schoepfi)
A woman on the beach holds two medium-sized young lively sea urchins from the Aegean Sea.
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
Black sea urchin (Arbacia lixula) undersea, Aegean Sea, Greece, Halkidiki
This image shows several sea urchins, with one opened to reveal its bright yellow insides. The sea urchin's shell is covered with black spines, creating a sharp contrast. The background consists of light-colored ice, highlighting the details of the sea urchin.
Yellowspotted burrfish (cyclichthys spilostylus) is in a defensive position, Red Sea
colorful Anemone flower sea and coral
Two live sea urchins on a rock on a bright background of blue water
A sunburst sea anemone in a tidal pool on the coast of Newport Beach, California during the winter.
Black sea urchin oral face ,  Arbacia lixula
Clownfish sheltering in an anemone while snorkelling a coral reef
Urchin macro photography сlose up. In the water.
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.
Yellowspotted burrfish (cyclichthys spilostylus) using its defense system. Red sea
Dried fish - Diodon holocanthus (Ballon-Igelfisch, Kugelfisch) for sale on the streets of Venice, Italy.
close up of sea urchins fresh out of the sea on a white background. sea urchins from the Aegean Sea.
Diadema setosum
A multi colored sea urchin is just below the water’s surface.
Blue sea urchin on glass in a marine aquarium
Crown of thorns starfish, Acanthaster ellisii, Sea of Cortez, Mexico. Sea star. Red and orange starfish on a rock.
Cooking sea urchins. Seafood ingredients, food background
Waigeo island, Raja Ampat, West Papoua, Indonesia
sea urchin on a rock in the sunlight
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
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