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Caribbean coral reef off the coast of the island of Roatan, Honduras
This image shows the effects of Coral bleaching and disease. This stunning Staghorn coral (Acropora) is beginning to show the signs of coral bleaching.  The tips are turning white.  This could be as a result of pollution, disease or global warming.  The location is Phi Phi Islands, Andaman Sea, Krabi, Thailand.
Underwater photo from a scuba dive in the Red Sea
Hard coral reef system in the pacific ocean
Beautiful tropical coral reef with shoal of coral fish
Mopsella sp.Gorgonian Coral, West Side Peleliu Island near South Point, Palau, Micronesia, 6°58'34.42\
Dense coral reefs in Kei Kecil waters, Southeast Maluku
Caribbean sea underwater coral reef with tropical fish in Cuba
Corals in the form of tentacles on a reef.
Waigeo island, Raja Ampat, West Papoua, Indonesia
A single large bright orange Sinuous sea fan (Eunicella tricoronata) standing out against the dark background
Underwater nature background of healthy coral garden reef ecosystem in natural sun light. Great Barrier Reef, Queensland, Australia.
School of Blue Green Chromis
The color of Gorgonian Seafan Annella mollis varies and ranges from cream-colored to pink and orange. The close-meshed skeleton of the species in the family Subergorgiidae consists of fused sclerites and gorgonin, so it is extraordinarily flexible and thus perfectly adapted to strong currents. This white specimen, unusual for that region, is bleached. A lot of small fishes, mainly Anthias and Damselfishes are there. Palau, Micronesia, 6°59'10.52 N 134°13'7.34 E at 32m depth
Stunning Pink Flower Tree Deep Sea Coral On Black
Pink Anemonefish (Amphiprion perideraion) underwater inside an anemone in Koh Tao, Thailand
Aerial view Great Barrier Reef from sky out of air plane in Australia
Sea life  Orange  coral from scuba diver point of view
Coral bleaching occurs when corals expel their symbiotic algae, known as zooxanthellae, due to stress caused by factors such as high water temperatures, pollution, or ocean acidification. This leads to the corals losing their vibrant colors and becoming pale or white. Without the zooxanthellae, the corals are more vulnerable to disease and may ultimately die. Coral bleaching is a major concern for coral reefs around the world, as it can have a devastating impact on the entire marine ecosystem that relies on these important structures.
Soft coral reef system in the pacific ocean
Rainbow wrack alga Cystoseira tamariscifolia, underwater in the Atlantic ocean, Spain
This stunning Staghorn coral ((Acropora cervicornis) is showing early signs of coral bleaching as the tips are turning white.  This is a critically endangered species of coral highly sensitive to pollution, climate change, ocean acidification and disease as its threats.  Coral reefs are some of the most diverse ecosystems in the world with 70% globally suffering coral bleaching.  The location is Phi Phi Islands, Andaman Sea, Krabi, Thailand.
Underwater blue scene with Sea Fan or Gorgonia coral . Biodiversity of coral reef ecosystem.
On the ocean floor of the Indo-Pacific Ocean
beautiful colorful small corals underwater
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 \
Beautiful sea corals in blue water. Underwater life background
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 of black coral.
Underwater coral reef in red sea
Free Images: "bestof:Some Indian Deep-Sea Corals.jpeg Some Indian Deep-Sea Corals Caryophyllia ambrosia from the Laccadive Sea 1000 fathoms Subject Corals Caryophyllia Tag"
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