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Cadre d'inventaire sur récif corallien

A white square survey quadrat frame rests on a branching coral reef underwater, with sunlight filtering through the surface and a sandy seafloor visible in the background.

A coral survey grid on a reef at midday, a square quadrat frame laid over branching coral with a line running off across the sand, sunlight breaking into shafts from the surface, blue water and a far drop-off, 24mm underwater housing Voir plus

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A dense thicket of staghorn coral sits in shallow, clear turquoise water, with a large school of small blue-green fish hovering above the branches and sunlight creating shimmering patterns on the sandy lagoon floor.

A wide-angle underwater view of a coral reef with tan and violet hard corals and a school of small fish swimming in clear blue water under bright sunlight.

A vibrant coral reef with purple staghorn coral and ochre brain coral sits on a sandy seabed under clear, sunlit water with rippling light caustics and a school of small fish in the background.

A view of an Okinawa fringing reef at noon, featuring coral heads and turquoise sand channels with sunlight caustics, a white surf line in the distance, and deep blue ocean water under a bright sky.

A split-level view shows a vibrant coral reef underwater and a silhouetted island under a golden sunset sky.

A split-level underwater and above-water view of a tropical reef edge at Pulau Hantu, featuring plate corals and a carpet anemone in shallow green water, with a forested islet and hazy sky visible above the waterline.

A green sea turtle swims over a vibrant coral reef under bright, dappled sunlight filtering through clear blue water.

A school of orange redfish swims among white Lophelia coral colonies on a dark, deep-sea reef illuminated by the twin spotlights of a submersible.

A large school of blue tang fish swims through a sandy channel between coral reef formations in clear, sunlit tropical water.

Underwater view of Champagne Reef featuring volcanic gas bubbles rising from a black sand seabed surrounded by coral, sea fans, and sponges, with sunbeams filtering through the water.

A school of fish swims around the coral-encrusted mast and rigging of an underwater shipwreck, with sun rays filtering down from the surface.

A hammerhead shark swims over a sandy seabed populated by a large colony of garden eels, illuminated by slanting late afternoon sunlight.

An underwater shot of a brain coral head with a parrotfish and a school of yellow grunts swimming in murky, teal-tinted water with dappled sunlight.

A scuba diver in a black wetsuit and gloves holds a mesh bag containing a fragment of branching coral while swimming near a reef wall in deep blue-green water with sunlight filtering from the surface.

A bright flashlight beam illuminates a vibrant orange elephant-ear sponge and a diverse coral reef against a dark, sandy ocean floor at night.

Sunken ancient marble columns and a decorative capital rest on the sandy seabed in clear turquoise water, illuminated by sunlight creating caustic patterns.

A split-level underwater and above-water shot of a catamaran floating in the turquoise waters of a tropical lagoon, with coral reefs and fish visible below the surface and a lush green mountain peak in the background under a bright sky.

A view of a vibrant coral reef teeming with small silver fish, seen through crystal-clear turquoise water from a weathered wooden jetty at sunrise with distant mountains in the background.

A sunken ship wreck rests on the sandy ocean floor, covered in vibrant pink and orange soft corals, with sunlight filtering through the deep blue water above.

A green sea turtle rests on a coral reef at Apo Island, surrounded by a shoal of orange anthias fish under sunlight filtering through the water.

A vibrant coral reef wall drops into the deep blue ocean, illuminated by bright sunlight filtering through the water surface.

An over-under split-level shot showing a golden-brown elkhorn coral reef underwater in the foreground and a green island hill under a blue sky with white clouds in the background.

A massive, lumpy golden-brown Porites coral colony sits on the seafloor, illuminated by sun rays filtering through the water, with a school of small blue-green fish swimming above it.

Underwater view of a Posidonia seagrass meadow with long green blades backlit by sunlight, featuring a sandy bottom with light patterns and a small school of fish swimming through the vegetation.

A school of grey reef sharks swims along a vibrant coral reef wall in deep blue water, illuminated by sun rays filtering from the surface.

A cluster of small air bubbles rises through clear turquoise water above a sandy seabed with coral reefs, illuminated by bright sunlight from the surface.

A vibrant coral reef ecosystem filled with various species of tropical fish under clear turquoise water with sun rays filtering through the surface.

A vibrant coral reef wall teeming with barrel sponges, rope corals, and small fish, illuminated by sunlight filtering through the water from the left side.

A snorkeler is silhouetted against the sunlit surface of the ocean above a vibrant coral reef teeming with small orange fish.

An aerial view of a snorkeler floating in clear turquoise water above a large brain coral formation surrounded by small tropical fish.

An old bronze cannon covered in coral and sea fans rests on the white sandy seabed of an underwater wreck site, with shafts of sunlight filtering through the blue water and a small school of silver fish swimming near the muzzle.

A sea turtle swims past a vibrant coral reef wall featuring large red and violet sea fans, with sunbeams filtering through the water from the surface.

An underwater view of a Posidonia seagrass meadow with long green blades growing on a sandy seabed, illuminated by sunlight rippling through the clear water.

A grey reef shark swims over a vibrant coral reef at Osprey Reef, illuminated by sun rays filtering through the water from the upper right.

A school of silver fish swims through the large, curved ribcage of a whale skeleton resting on the white sandy floor of a turquoise lagoon, with sunbeams filtering down from the surface.

A man with long dark hair snorkeling in clear, sun-dappled water near a vibrant coral reef filled with yellow tang fish.

A split-level underwater and above-water view of a coral reef with a shoal of fish and a lighthouse on the shore at sunset.

A sea turtle swims through clear blue water above a vibrant coral reef as sunlight streams down from the surface.

A large colony of garden eels emerges from a sandy seabed in the Red Sea, with sunlight creating rippled patterns on the ocean floor.

A wide-angle underwater view of a vibrant coral reef teeming with yellow tang and blue damselfish, featuring brain coral and sea fans under clear, sunlit turquoise water.

A vibrant Caribbean coral reef drop-off features sea fans and barrel sponges in the foreground, with sun rays piercing through clear blue water into the deep abyss.

Submerged mangrove roots with textured bark extend through clear turquoise water under bright sunlight.

A green sea turtle swims through clear turquoise water above a vibrant coral reef, with sun rays filtering down from the surface and a school of small fish swimming above.

A digital collage featuring a sea turtle swimming among coral reefs and small fish, with translucent layered panes, halftone patterns, and a circular reflection of sunlight on the water surface.

A wide-angle underwater view of a coral reef drop-off wall featuring large barrel sponges and purple tube sponges, with the sunlit surface visible far above in the deep blue water.

A freediver swims upward through columns of rising bubbles above a dark volcanic seabed with purple sea fans, illuminated by sun rays breaking through the water surface.

A Caribbean reef shark swims above a dense thicket of elkhorn coral in clear blue water, illuminated by shafts of sunlight from the upper right.

A large sea fan coral is silhouetted against the sun, with golden light rays piercing through the deep blue water in an underwater scene.

A green sea turtle rests on the white sandy bottom of a shallow, clear bay, illuminated by sunlight filtering through the water.

A series of white concrete rings sits on a sandy seabed underwater, with shafts of sunlight filtering through the clear turquoise water and a shoal of silver fish swimming through the center of the structures.

A sea turtle swims over a vibrant coral reef in clear, sunlit turquoise water.

A wide-angle underwater view of the Salt Pier pilings in Bonaire, covered in orange cup coral and purple sponges, with a school of yellow goatfish swimming in the shade and sunbeams filtering through the water.

A school of bumphead parrotfish grazes over a coral reef at dawn, with sunlight filtering through the water and creating a cloud of sand behind the fish.

An underwater view of a rusted shipwreck covered in coral, with shafts of sunlight illuminating a large shoal of small fish swimming over the deck in clear blue water.

Rusticles and soft corals hang from the rusted steel structure of a shipwreck underwater, illuminated by a shaft of sunlight from the surface.

An underwater view of a shallow reef with brain corals and a school of striped sergeant fish, looking up at a rain-pocked surface in soft grey-green light.

A vibrant coral reef wall teeming with diverse soft corals and sea fans is illuminated by sunlight filtering through the water, with a steep drop-off into deep blue water on the right.

A dense underwater scene of branching stony coral illuminated by a single shaft of blue light filtering down from the surface.

A school of yellow butterflyfish swims above a vibrant coral reef in clear, shallow turquoise water with sunlight filtering from the surface.

A whitetip reef shark rests on the sandy ocean floor beneath a large table coral formation in clear blue water, with small fish swimming nearby and sunlight filtering from above.

A snorkeler swims over a large, diverse coral reef teeming with small blue fish in clear, sunlit ocean water.

A close-up view of Acropora coral releasing pink and white gamete bundles into the dark ocean water.

A lone trilobite crawls across the pale sandy floor of a shallow turquoise sea, surrounded by numerous clustered, ribbed, cup-shaped archaeocyath sponges under bright, slanting sunlight.

A basket star with its branched arms extended sits on a coral reef, illuminated by a single beam of light against a dark underwater background.

A large school of fish forms a spiraling column underwater, illuminated by sunbeams filtering down from the surface above a coral reef.

A blue-spotted ribbontail ray glides over white sandy seafloor beneath a large table coral formation in clear, sunlit tropical waters.

A sea turtle swims near the surface of the ocean, silhouetted against a bright sunburst with light rays filtering down onto a coral reef below.

A small sea turtle hatchling rests within a dense patch of golden sargassum seaweed at the ocean surface, captured in a split-level shot showing the dawn sky above and the deep blue water below.

A scuba diver with long dark hair tied back swims alongside a vibrant, vertical coral reef wall in deep blue water with bubbles rising to the surface.

A small, coral-encrusted shipwreck rests on a sandy seabed in clear, sunlit water, with a school of fish swimming over the bow.

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A freediver in a black wetsuit descends vertically along a rope into the deep blue ocean, illuminated by sun rays filtering down from the surface.