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An underwater image of a yellow sponge
Lush green sea grass underwater- Posidonia Oceania
Tubeworm, Fan Worm, Spirographis, Spirographis Spallanzani, Feather Duster Worms, Tube Worm, Polychaete, Cabo Cope Puntas del Calnegre Regional Park, Mediterranean Sea, Murcia, Spain, Europe
Colourful anthias meeting at a sea mountain called Batu Bolong, many fish species as Jewel fairy basslet = Sea Soldies (male and female) Pseudanthias squamipinnis, Threadfin Anthias (male and female) Pseudanthias huchtii, Reticulated Dascyllus Dascyllus reticulatus, Clarks Anemonefish Amphiprion clarkii and Moonwrasse Thalassoma lunare. This is a composite photo, both parts same place, but the lower part 1 day 15 minutes later. East of Komodo Island, Indonesia, 8°32'13\
Plate LPS Coral
Coral reefs are the one of earths most complex ecosystems, containing over 800 species of corals and one million animal and plant species. Here we see a Giant Clam (Tridacna gigas). These clams are a rare site due to overfishing for their meat and pearls they are a ‘Vulnerable species’.  Their shells are open by day to allow sunlight to feed the algae within via photosynthesis.
Underwater environment beneath the ocean surface with seaweed and kelp beds.
Colors of marine algae underwater in the Atlantic ocean, Galicia, Spain, Pontevedra
paysage sous-marin avec des coraux orange et des algues blanches
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.
Underwater photo with sea urchin and coral.
Jelly fish in an aquarium tank
on blue background
Sea urchin on a rocky beach
Common Sea Urchin, Paracentrotus lividus, Cabo Cope Puntas del Calnegre Natural Park, Mediterranean Sea,  Murcia, Spain, Europe
Floating sea weed (Codium Fragile)
Symphysodon discus in an aquarium on a green background
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.
Diadema setosum
Magical underwater scenery captured while scuba diving during summer vacation in Montenegro at the Adriatic coast.
Sabella spallanzani is a species of marine polychaete worm commonly known as the European fan worm or feather duster worm. It belongs to the family Sabellidae and is widely distributed in the coastal waters of the Mediterranean Sea and the northeastern Atlantic Ocean. The worm has a slender and elongated body that can reach lengths of up to 30 centimeters. Its most striking feature is its ornate crown of feathery, fan-shaped tentacles called radioles, which are used for filter-feeding and respiration. The radioles come in various colors, including shades of white, yellow, orange, and pink, adding a vibrant touch to the underwater landscape. Sabella spallanzani is a fascinating and beautiful creature that contributes to the biodiversity of marine ecosystems.
Sea urchin on a male hand. Shor underwater.
Yellowspotted burrfish (cyclichthys spilostylus) using its defense system. Red sea
emperor angelfish, Mutton snapper,French angelfish, sea horse, Cuttlefish , stone fish
Paracanthurus hepatus,blue tang fish
Underwater coral reef tropical sea view.
Underwater photography. Sea urchins. Zanzibar, Tanzania.
Close-up of Sailfin tang on the coral reef.
Black sea urchin (Arbacia lixula) undersea, Aegean Sea, Greece, Halkidiki
Seaweed on seabed in a warm Aegean sea in Greece.
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