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Coral bleaching is the process when corals become white due to loss of symbiotic algae and photosynthetic pigments. This loss of pigment can be caused by various stressors, such as changes in temperature, light, or nutrients.
Huge stretches of coral reef around the world are turning a ghostly white this year amid record warm ocean temperatures. On Monday, the U.S. National Oceanic and Atmospheric Administration ...
The 2022 bleaching was the first during a La Niña event, El Niño’s counterpart, which tends to have a cooling influence – raising serious concerns about the reef’s outlook. One Tree Island ...
The NOAA coral reef authority declared the global bleaching event in April 2024, making it the fourth of its kind since 1998. The previous record from the 2014 to 2017 mass bleaching affected just ...
A further potential threat is the increase of coral bleaching events, as a result of global climate change. [9] Coral bleaching is also a major threat to all types of coral. Coral bleaching is when the coral expels the zooxanthella that they feed on, which causes them to turn white, hence "bleaching."
Bleaching occurs when the zooxanthellae and coralline algae leave the coral skeleton behind due to stresses in the water. This causes the coral to lose its colour because the previous organisms sustained on the coral skeleton vacate, leaving a white skeleton. The bleached coral can no longer complete photosynthesis, and so it slowly dies.
Coral bleaching turns the coral white, but it does not kill it right away. Depending factors like what type of coral is it, and temperature of the water in that specific area, decide on how long the coral has. Coral bleaching effects in Hawaii are primarily caused by water temperature increases due to climate change. A rise in the water ...
The coral reef off southeast Florida is experiencing an unprecedented and potentially deadly level of bleaching this summer because of rising ocean temperatures caused by climate change, federal ...