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close-up sea urchin on rock with blue sea in background. Paracentrotus lividus
The stone covered harbour floor, Kolocep Island, Croatia.
Close-Up Of Sea Urchin On Rock In Sea
Sea Urchins, California. Strongylocentrotus purpuratus
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.
Mediterranean purple sea urchin - Sphaerechinus granularis
A little sea urching on the beach
Purple Sea Urchin Close Up Underwater Southeast Alaska
Purple and black sea urchins underwater, Mediterranean sea, Vermilion coast, Roussillon, France
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 on Rock Near Ocean Background
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
little sea urchin in the rocks
Black sea-urchin standing on the yellow wood.
Sea urchins underwater on a rocky seabed with sunlight through water surface, indian ocean, island of Zanzibar, Tanzania, East Africa
Girl trying to touch a sea urchin her sister is holding on a palm of hand
Paracentrotus lividus is a species of sea urchin in the family Parechinidae commonly known as the purple sea urchin. It is the type species of the genus and occurs in the Mediterranean Sea and eastern Atlantic Ocean
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.
Sea urchins in the Adriatic Sea dangerous wild animals in Croatia
Small puddle filled with water after high tide with some marine life: mussels, sea urchins, fry, etc.
Under the crystal clear water of the Aegean Sea there are a huge number of sea urchins on the rocks in Greece
Black sea urchin (Arbacia lixula) underwater on the beach
View of a female sea-urchin.
Black sea urchin (Arbacia lixula) undersea, Aegean Sea, Greece, Skiathos island, Vasilias beach
Blue Spotted Sea Urchin Astropyga radiata occurs in the tropical Indo-Pacific Ocean from the African coast to Australia and to Hawaii in a depth range from 0 to 60m, usually 10 to 30m, max. test diameter 20cm. \nThe species is often found in lagoons and bays where the substrate is sand, shingle or coral rubble. Sometimes many urchins collect together in one locality in dense aggregations. \n\nAstropyga radiata is mostly nocturnal and feeds by grazing on algae. The mouth is at the centre of the oral (under) surface where there are five powerful teeth.\nThis urchin is light sensitive and can angle its spines towards an approaching threatening object, but rather than centralized eyes, Astropyga radiata has a distributed sensory system. Funny thing is, a lot of people think the thing in the middle is the eyeball, but the rectum. \n\nThe sexes are separate in Astropyga radiata. Eggs and sperm are liberated into the water column. After fertilisation, the larvae are planktonic and develop through several stages before settling on the seabed. \n\nLembeh Strait, Indonesia \n1°28'56.394 N 125°15'15.588 E at 8m depth
A sea urchin surprised by a very low tide
Cala Fosca in Costa Brava\n\nParacentrotus lividus
Blue-spotted sea urchin on the coral reef under the sea surface movements
Sea Urchin Echinoderm shell texture. Underwater Sea life,  Macro abstract. Blue sea in  background.
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