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Crown of thorns starfish, Acanthaster ellisii, Sea of Cortez, Mexico. Sea star. Red and orange starfish on a rock.
Green toned shell of a sea urchin.
Urchin macro photography сlose up. In the water.
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.
Black sea urchin oral face ,  Arbacia lixula
Underwater photo of starfish and sea urchin.
Sea urchin shell isolated on a white background.
Sea urchin shells of various colours
Sea urchin
View of a female sea-urchin.
A woman on the beach holds two medium-sized young lively sea urchins from the Aegean Sea.
Crown of thorns starfish, Acanthaster ellisii, Sea of Cortez, Mexico. Sea star. Red and orange starfish on a rock.
sea urchin skeleton isolated on white background
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.
Sea urchin shell on white background
Sea urchin shells of various colours
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
Test (shell) of Black sea urchin (Arbacia lixula) undersea, Aegean Sea, Greece, Halkidiki, Pirgos beach
A close-up view directly above an orange colored starfish and a green sea urchin shell in bright sunlight on a dry sand beach.
Imagen horizontal de elementos marinos con fondo blanco. Concha, estrella y erizos de mar.
Sea Urchin Echinoderm  Underwater Sea life
Sea urchins isolated on white background
Sea urchin shells of various colours
sea urchin isolated on a white background.
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.
Fauna of Atlantic ocean around Gran Canaria - skeletons of Paracentrotus, sea urchin isolated on white background
A sunburst sea anemone in a tidal pool on the coast of Newport Beach, California during the winter.
New Zealand sea urchin or Kina shell
Close-up of Sea urchins or urchins, also known as sea hedgehogs, lying on the sand.
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