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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
Plate LPS Coral
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
Feather star on soft coral head in tropical blue ocean water
Common Long Spined Sea Urchin, (Diadema antillarum) underwater, Marine life
Sea urchin
Yellow Feather star ( Crinoid ) - Sea lily on Maldives
Underwater photo from a scuba dive in the Red Sea
Underwater two long spined sea urchins, Diadema antillarum, on the seabed in the Caribbean sea
Anthopleura xanthogrammica, or the giant green anemone, is a species of intertidal sea anemone of the family Actiniidae. Other  names for this anemone include green surf anemone, giant green sea anemone, green anemone, giant tidepool anemone, anemone, and rough anemone.  Salt Point State Park, California.
School of Blue Green Chromis
Underwater nature background of healthy coral garden reef ecosystem in natural sun light. Great Barrier Reef, Queensland, Australia.
Neptune Grass, Posidonia oceanica, Cabo Cope-Puntas del Calnegre Natural Park, Mediterranean Sea, Murcia, Spain, Europe
Sea grass Scuba diving. Beautiful sea life, Underwater scene Sea grass bottom. Beautiful blue sea and scuba diver air bubble in background with copy space.
Underwater photo of Purple Sea Urchin in natural habitat the sea with yellow coral in background. Blue sea
The genus Acropora has the largest number of species of all the hard corals, and they are among the important building blocks of a reef. Larger colonies are more commonly seen on undisturbed and remote reefs. Many species grow into branching forms that give rise to common names like \
Green alga velvet horn, Codium tomentosum seaweed underwater in the ocean, Eastern Atlantic, Spain, Galicia
Longspined sea-urchin (Diadema africana) in Lanzarote (Canary Islands)
Diadema setosum
horizontal shot of soft corals underwater, sunbeams in the water.nature background.
Blue sea urchin on glass in a marine aquarium
One Antler coral (Pocillopora grandis) in the Andaman sea, Thailand.
Hairy Frogfish - Antennarius striatus. Underwater macro world of Tulamben, Bali, Indonesia.
Bunte Unterwasserwelt
Long spined sea urchins underwater on seabed of the Caribbean sea
The landscape of the beaches of Bali, Pulo Aceh at low tide near dusk with colored reefs and sunset
sea bottom with fish and algae as a background
Crown of thorns starfish, Acanthaster ellisii, Sea of Cortez, Mexico. Sea star. Red and orange starfish on a rock.
Free Images: "bestof:FMIB 45503 Deep-Sea Sea-Urchins.jpeg Deep-Sea Sea-Urchins Homolampas glauca from the Bay of Bengal Most of the spines have been removed Subject Sea urchins"
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starfish-diving-summer-sea-urchins-934823.jpg
coral-hawaii-red-sea-urchins-1418180.jpg
lime-skeleton-sea-urchin-sea-urchins-1305328.jpg
panama-city-florida-divers-bay-95611.jpg
151123-N-GO855-047.jpg
"Sea_Urchins"_by_Edward_Armitage_(1882).jpg
SLNSW 42348 Experimental deep sea diving tender Malabar being tested at Long Bay.jpg
FMIB_45503_Deep-Sea_Sea-Urchins.jpeg
FMIB_45502_Deep-Sea_Sea-Urchins.jpeg
FMIB_52635_Test_of_sea-urchin,_with_the_spines_removed_to_show_the_arrangement_of_the_plates,_lateral_view_-.jpeg
FMIB_52637_Spines_of_sea-urchins.jpeg
FMIB_46421_Deep-Sea_Lobster_(Nephropsis_stewartii),_from_the_Bay_of_Bengal.jpeg
FMIB_45504_Deep-Sea_Holothurian.jpeg
FMIB_47673_Deep-Sea_Feathers.jpeg
FMIB_45455_Deep-Sea_Fishes_with_Head-Lights.jpeg
FMIB_45489_Indian_Deep-Sea_Mollusca.jpeg
FMIB_45495_Indian_Deep-Sea_Bivalves.jpeg
FMIB_45501_Indian_Deep-Sea_Starfishes.jpeg
FMIB_45509_Indian_Deep-Sea_Sponges.jpeg
FMIB_45510_Indian_Deep-Sea_Sponges.jpeg
FMIB_45494_Indian_Deep-Sea_Bivalves.jpeg
FMIB_45507_Some_Indian_Deep-Sea_Corals.jpeg
FMIB_46422_Munidopsis_regia,_a_Deep-Sea_Galatheid_from_the_Bay_of_Bengal.jpeg
FMIB_47672_Way_of_a_Deep-Sea_Fish.jpeg
FMIB_45446_Onirodes_glomerosus,_a_deep-sea_Angler,_with_rudimentary_subcutaneous_eyes_The_first_dorsal_fin-ray_is_modified_to_form_a.jpeg
FMIB_45430_Aristaeus_coruscans,_a_brilliantly-luminous_deep-sea_prawn_from_the_Bay_of_Bengal_561_fathoms_The_luminous_fluid_is_emitted_from.jpeg
FMIB_50126_Echinus_mamillatus_Sea_Lichen_without_spines.jpeg
FMIB_47678_Purblind_Crustaceans.jpeg
FMIB_45431_Indian_Fire-Fish.jpeg
FMIB_47668_Link_Between_the_East_and_West_Indies.jpeg
FMIB_41102_Arbacia_punctulata-_Aboral_view_of_test_with_spines_(48);_Oral_view_of_test_with_spines_(49);_Side_view_of_test_without_spines.jpeg
FMIB_41103_Stronglyocentrotus_drobachiensis,_arboral_view_of_test_with_spines_(53);_oral_view_of_test_with_spines_(54);_side_view_of_test.jpeg
FMIB_50132_Sea_Urchins_lodged_in_the_rocks_they_have_excavated.jpeg
FMIB_52636_Pedicellariae_of_sea-urchins.jpeg
FMIB_52638_Porocidaris_sharreri.jpeg
FMIB_52614_Aristotle's_Lantern.jpeg
FMIB_52639_Dorocidaris_Blaket.jpeg
Caenopedina hawaiiensis.jpg
FMIB_51228_Common_Sea-Urchin,_Strongglucentrotus_drobachiensis.jpeg
FMIB_49279_Porocidaris_purpurata,_Wyville_Thomson.jpeg
FMIB_49295_Calveria_hystrix,_Wyvilll_Thomson.jpeg
FMIB_50125_Echinus_mamillatus_(Lamarck).jpeg
FMIB_50127_Echinus_esculentus_(Lamarck).jpeg
FMIB_52640_Arbacia_punctulata.jpeg
Aspidodiadema_hawaiiense.jpg
Histocidaris_variabilis.jpg
Stereocidaris_hawaiiensis.jpg
FMIB_34634_Porovidaris_parparata,_Wylie_Thomson.jpeg
FMIB_46984_Calveria_hystrix_(W_Thomp)_2,000_metres_de_profondeur.jpeg
FMIB_49280_Pourtalesia_jeffreysi,_Wyville_Thomson.jpeg
FMIB_50128_Bussal_armature_of_Echinus_lividus.jpeg
FMIB_50129_Masticating_apparatus_of_Echinus_lividus.jpeg
FMIB_48319_Enemies_of_the_Oyster.jpeg
FMIB_53307_Pedicellaire_tridactyle_d'Echinocardium_pennatifidum,_d'apres_Koehler.jpeg
FMIB_49258_Forms_of_Surface_Life-_Young_sea_urchin.jpeg
FMIB_38501_Purple_Sea_Urchin_Cold_Spring_Harbor,_Long_Island_Sound.jpeg
FMIB_34623_Oursin_regulier_a_Longues_Baguettes,_Place_Sur_le_Dos_(Heterocentrotus_mamillatus_L_Agassiz).jpeg
FMIB_49297_Calveria_fenestrata,_Wyville_Thomson_One_of_the_four-valved_pedicellariae.jpeg
FMIB_53308_Pedicellaire_glandulaire_de_Temnechinus_maculatus,_d'apres_Koehler.jpeg
FMIB_38500_Horseshoe_Crab_(Left);_Common_Starfish_(Right);_Green_Sea-Urchin_(Below).jpeg
FMIB_53316_Phormosoma_uranus_W_Th,_galles_a_la_face,_interne_du_test,_d'apres_Koehler.jpeg
FMIB_53681_Etoiles_de_mer.jpeg
FMIB_49296_Calveria_hystris,_Wyville_Thomson_Inner_surface_of_a_portion_of_the_tent_showing_the_structure_of_the_ambulacral_and.jpeg
FMIB_35964_Polycheles_baccata,_one_of_the_Eryonidae.jpeg
FMIB_33797_Deep-Sea_Fishing_Line.jpeg
FMIB_46424_Deep-Sea_Crab_(Platymaia_wyville-thomsoni).jpeg
FMIB_46481_Deep-Sea_Prawn,_Nematocarcinus_undulatipes.jpeg
FMIB_45456_Deep-Sea_Fishes_with_Head-Lights.jpeg
FMIB_45462_Deep-sea_Snipe-fish,_Halimochirugus_centriscoides,_from_off_Cape_Comorin,_143_fathoms.jpeg
FMIB_45466_Deep-Sea_Hermit-Lobsters,_with_Dull,_Lack-Lustre_Eyes.jpeg
FMIB_45471_Deep-Sea_Crustacea_with_Abnormally_Large_Eyes.jpeg
FMIB_52234_Deep-sea_Angler,_Ceratias_holbolli_Kroyer_Greenland.jpeg
FMIB_47547_Deep-sea_exploring_steamer_Albatross,_built_by_the_Bureau_and_for_twenty-five_years_engaged_in_surveying_fishing_grounds_and_in.jpeg
FMIB_46480_Deep-Sea_Hermit-Crab,_Parapagurus_pilosimanus,_sheltered_by_a_colony_of_Episoanthus,_from_deep_water_off_the_west_of_Ireland.jpeg
FMIB_47676_Deep-Sea_Crustacea_with_Abnormally_Large_Eyes.jpeg
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