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Single purple sea urchin in the middle of coral reef tank in an aquarium
Long-spined sea urchin (Diadema antillarum) on the coral reef of Guadeloupe (Caribbean, France)
Close-Up Of Sea Urchin On Rock In Sea
Purple Sea Urchin Close Up Underwater Southeast Alaska
close-up sea urchin on rock with blue sea in background. Paracentrotus lividus
Sea Urchins, California. Strongylocentrotus purpuratus
colorful Anemone flower sea and coral
Porcupine Sea Urchin (Diadema setosum)
Mediterranean purple sea urchin - Sphaerechinus granularis
Rock boring urchin, Echinometra mathaei, nestled in a crevise of a tide pool. The urchin uses it jaws to enlarge the hole as it grows. Ko Olina, Oahu, Hawaii.
Close up of a live sea urchin with a green urchin shell on top of it underwater
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
Strongylocentrotus purpuratus, the purple sea urchin, lives along the eastern edge of the Pacific Ocean extending from Ensenada, Mexico, to British Columbia, Canada. This sea urchin species is deep purple in color, and lives in lower inter-tidal and nearshore sub-tidal communities. Monterey Bay, California.
Beautiful underwater scene with sea urchin in aquarium in Dusseldorf, Germany. Tropical scenery.
Diadem sea urchin (Astropyga pulvinata) in the sea of Cortez (Mexico)
Purple Sea Urchin, strongylocentrotus purpuratus, California
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 urchins in the Adriatic Sea dangerous wild animals in Croatia
A vibrant sea urchin clings to a rock under the water’s surface.
Blue sea urchin on glass in a marine aquarium
Background of Kina Shells with differential focus. The focus is on the top Kina Shell. This photo is in soft focus.
Blue Black Spiney Urchin in Maui Hawaii Tidepool
The Red Urchin, blue-spotted urchin; Fire Urchin or False Fire Urchin, Astropyga radiata, is an urchin, with a test (shell) diameter of about 20 cm. It is found in the Indo-Pacific region. Maui Island, Hawaii
Centrostephanus longispinus, the hatpin urchin, is a species of sea urchin in the family Diadematidae. There are two subspecies, Centrostephanus l. longispinus, found in the eastern Atlantic and Mediterranean Sea and Centrostephanus l. rubricingulus, found in the western Atlantic.
Red pencil urchin, Heterocentrotus mamillatus, in a brilliant red color typical of specimens near Hawaii.
Purple Sea Urchin (Strongylocentrotus purpuratus) in Pacific Ocean
Sea Urchin Echinoderm shell texture. Underwater Sea life,  Macro abstract. Blue sea in  background.
A black long spine urchin (Diadema setosum) resting on bottom of seabed rock. Its body is full of extremely long, hollow black venomous spines spotted in the sea.
Sea urchin shells of various colours
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