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close-up sea urchin on rock with blue sea in background. Paracentrotus lividus
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.
Spiny black sea urchin (Diadema setosum) grazing on algae in tropical coral reefs. Vital for reef ecosystem balance.
The remains, shell, or exo skeleton of a sea urchin by a coastal rock pool.
A little sea urching on the beach
Background of Kina Shells with differential focus. The focus is on the top Kina Shell. This photo is in soft focus.
Purple Sea Urchin Close Up Underwater Southeast Alaska
A Long Spined Sea Urchin (Centrostephanus longispinus) in the Mediterranean Sea
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 Shell on the Rock
Sea urchin Evechinus chloroticus on rock covered with layer of sediment and some vegetation.
The stone covered harbour floor, Kolocep Island, Croatia.
Blue-spotted sea urchin on the coral reef under the sea surface movements
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.
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.
Black sea-urchin standing on the yellow wood.
Mediterranean purple sea urchin - Sphaerechinus granularis
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
Arbacia lixula
Sea urchin
Purple sea urchin housed in an aquarium. Purple thorn spike sea urchin.
Sea Urchin Echinoderm  Underwater Sea life
Sea urchins in the Adriatic Sea dangerous wild animals in Croatia
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.
Tropical sea urchin in aquarium closeup
Sea Urchin
A man holds in his hands a sea urchin with long needles in turquoise water
Cala Fosca in Costa Brava\n\nParacentrotus lividus
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