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A Crown-of-Thorns starfish (Acanthaster planci) on a badly damaged section of a coral reef in Gaaful Dhaalu atoll, in the faer south of the Maldives.

A mixture of Acropora species scleractinic hard corals, on a coral reef in Gaafu Dhaalu atoll, Maldives

A mixture of Acropora species scleractinic hard corals, on a coral reef in Gaafu Dhaalu atoll, Maldives

Staghorn scleractinic hard corals (Acropora species), on a coral reef in Gaafu Dhaalu atoll, Maldives

A growth of Acropora species, and one Goniastrea species (centre) scleractinic hard corals, on a coral reef in Gaafu Dhaalu atoll, Maldives

Mushroon Leather Coral (Sarcophyton species), a soft coral, growing on a coral reef in Gaafu Dhaalu atoll, Maldives

A 'forest' of Staghorn (Acropora species) hard corals, on a coral reef in Gaafu Dhaalu atoll, Maldives

A 'forest' of Staghorn (Acropora species) hard corals, on a coral reef in Gaafu Dhaalu atoll, Maldives

Acropora species scleractinic hard corals, showing some bleaching, growing on a coral reef in Gaafu Dhaalu atoll, Maldives

A mix of hard corals, with a Pocillopora species coral in the centre, growing on a coral reef in Gaafu Dhaalu atoll, Maldives

A mix of Acropora species scleractinic hard corals growing on a coral reef in Gaafu Dhaalu atoll, Maldives

A shoal of small fish swimming over Acropora species hard corals, on a coral reef in Gaafu Dhaalu atoll, Maldives

A mix of Acropora species scleractinic hard corals growing on a coral reef in Gaafu Dhaalu atoll, Maldives

Underwater view of the reef along the circumference of the Great Blue Hole on Lighthouse Reef, UNESCO, Belize

A bleached magnificent sea anemone is found on a reef off the coast of Sulawesi in Indonesia. Bleaching is usually associated with higher than normal sea temperatures.

Soft leather coral, Sarcophyton sp., bleaching. This soft coral has lost its symbiotic algae, zooxanthellae, and turned white due to high water temperatures. Buyat Bay, North Sulawesi, Indonesia, Pacific Ocean.

Coral polyps bleaching, Favia sp. Bleaching occurs when corals stress under high water temperatures and expel their symbiotic zooxanthellae. The coral will starve to death if it does not reacquire zooxanthellae. Buyat Bay, North Sulawesi, Indonesia, Pacific Ocean.

Giant clam amongst the soft coral on the Great Barrier Reef, off Cairns, Queensland, Australia, Pacific

Dead and broken coral on the sea bed, Great Barrier Reef, off Cairns, Queensland, Australia, Pacific

Reportage in a smile bar in Paris, France. Teeth whitening involves applying a whitening paste using a special mouthpiece, then exposing the teeth to a LED lamp which sets off the whitening process.

Reportage in a smile bar in Paris, France. Teeth whitening involves applying a whitening paste using a special mouthpiece, then exposing the teeth to a LED lamp which sets off the whitening process.

Reportage in a smile bar in Paris, France. Teeth whitening involves applying a whitening paste using a special mouthpiece, then exposing the teeth to a LED lamp which sets off the whitening process.

Reportage in a smile bar in Paris, France. Teeth whitening involves applying a whitening paste using a special mouthpiece, then exposing the teeth to a LED lamp which sets off the whitening process.

The bleaching house of the former tent factory Landauer and Stromeyer and the water tower, industrial monument of Konstanz, Konstanz district, Baden-Wuerttemberg, Germany, Europe

A School Of Hawaiian Dascyllus (Dascyllus Albisella), A Hawaiian Endemic Fish, Over A Bleached Antler Coral (Pocillopora Eydouxi) Off The Kona Coast, Kona, Island Of Hawaii, Hawaii, United States Of America

Mouth detail of a colorful and healthy mushroom coral (Fungia fungites) that is growing on a tropical coral reef. Mushroom coral is unique in the coral world, in that it does not attach itself to the bottom, Philippines

This pink anemonefish (Amphiprion perideraion), is in an anemone (Heteractis magnifica) that is bleaching from high ocean temperatures and heat stress, Yap, Micronesia

This hard coral colony in the Pacific has begun to bleach, expelling its symbiotic zooxanthellae, consequences of global climate change and climate warming, Yap, Micronesia

This Pink Anemonefish (Amphiprion perideraion) is in an anemone (Heteractis magnifica) that is bleaching from high ocean temperatures and heat stress, Yap, Micronesia

This Pink Anemonefish (Amphiprion perideraion) is in an anemone (Heteractis magnifica) that is bleaching from high ocean temperatures and heat stress, Yap, Micronesia

Mouth detail of a colourful and healthy Mushroom coral, Fungia fungites, that is growing on a tropical coral reef in the Philippines. Mushroom coral is unique in the coral world, in that it does not attach itself to the bottom, Philippines

Reef resilience: a perfectly healthy coral ball after the bleaching episode of April 2024. The damselfish hotel withstood the heat in less than 3 meters of water. S-shaped pass, Mayotte