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Long-spined sea urchin (Diadema antillarum) on the coral reef of Guadeloupe (Caribbean, France)
Group of sea urchins underwater ( purple sea urchin  Paracentrotus lividus), eastern Atlantic Ocean, Spain, Galicia
Black sea urchin oral face ,  Arbacia lixula
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.
Underwater photo of Purple Sea Urchin in natural habitat the sea with yellow coral in background. Blue sea
Clownfish sheltering in an anemone while snorkelling a coral reef
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.
on a hike in mākena state park, maui, hawai'i - u.s.a.
A cluster of sea urchins in a Pacific Ocean tidal pool along the coast of Costa Rica.  Seen through the water.
Crown of thorns starfish, Acanthaster ellisii, Sea of Cortez, Mexico. Sea star. Red and orange starfish on a rock.
Urchin macro photography сlose up. In the water.
Sea Urchin
Sea urchin
Tide pools with sea life
Group of purple sea urchins with algae underwater, Atlantic ocean, Galicia, Spain, Pontevedra
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
sea urchin on a rock in the sunlight
A sunburst sea anemone in a tidal pool on the coast of Newport Beach, California during the winter.
Picturesque view of exotic red jellyfish swimming in deep blue sea water near coral reefs in Ibiza Spain
Crown of thorns starfish, Acanthaster ellisii, Sea of Cortez, Mexico. Sea star. Red and orange starfish on a rock.
Goniastrea favulus coral on the surface of the water with a body shaped like round oval lobes and small holes on top. This species is also called lesser star coral.
Man preparing raw sea urchins, also called garoines.
Cushion Starfish on a coral wall off the coast of Musandam in Oman
View of a female sea-urchin.
Detail of small tunicates colonizing a coral reef in Komodo National Park, Indonesia. Tunicates filter organic material from the ocean, improving water quality.
Sea life, close up, macro   Beautiful multicolored white, purple and orange Nudibranch. Underwater beauty Scuba diver point of view. Underwater photo.
anemone clown fish(nemo) eggs underwater macrophography in raja ambon indonesia
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
Black sea urchin (Arbacia lixula) undersea, Aegean Sea, Greece, Halkidiki
Sea urchin shells of various colours
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