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Mediterranean purple sea urchin - Sphaerechinus granularis
Purple Sea Urchin Close Up Underwater Southeast Alaska
Spiny black sea urchin (Diadema setosum) grazing on algae in tropical coral reefs. Vital for reef ecosystem balance.
Sea Urchin Shell on the Rock
close-up sea urchin on rock with blue sea in background. Paracentrotus lividus
Background of Kina Shells with differential focus. The focus is on the top Kina Shell. This photo is in soft focus.
The stone covered harbour floor, Kolocep Island, Croatia.
A Long Spined Sea Urchin (Centrostephanus longispinus) in the Mediterranean Sea
A little sea urching on the beach
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.
Sea urchin Evechinus chloroticus on rock covered with layer of sediment and some vegetation.
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.
Blue-spotted sea urchin on the coral reef under the sea surface movements
Black sea-urchin standing on the yellow wood.
A sea urchin (shellfish) is hiding in a hole at the sand floor during sea water level is low. Natural underwater animal photo. Close-up and selective partial focus at the animal body's part.
Close-up of a sea urchin held by a girl
the sea-urchin in the 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.
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.
Sea urchin
Arbacia lixula
Sea Urchin Echinoderm  Underwater Sea life
Sea urchins in the Adriatic Sea dangerous wild animals in Croatia
Tubifer Cardinalfish Siphamia tubifer (ex. Siphamia versicolor) occurs in the tropical Indo-West Pacific from the Red Sea south to Madagascar and east through the Maldives, Sri Lanka and India to the Andaman Sea Islands and to Western Australia, north to the Ryukyus andthroughout the Indo-Malayan region to Vanuatu in a depth range from 1 to 100m, usually to 18m depth, max. length 7cm. \nThe species forms small groups with long-spined urchins, but is also found among the spines of Acanthaster planci. Siphamia tubifer feeds on zooplankton and small invertebrates. The species is striped or not depending on the phase. One specimen encountered in this Blue Spotted Sea Urchin Astropyga radiata is clearly striped. \nBlue 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. \nLembeh Strait, North Sulawesi, Indonesia \n1°28'47.814 N 125°15'1.26 E at 23m depth
A man holds in his hands a sea urchin with long needles in turquoise water
Sea urchin at rock bottom
Tropical sea urchin in aquarium closeup
Sea Urchin
little sea urchin in the rocks
Sea Urchin Echinoderm shell texture. Underwater Sea life,  Macro abstract. Blue sea in  background.
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