Coral bleaching occurs in the oceans, but it also happens in a marine aquarium the causes are the same here is what happens and how to prevent it coral bleaching occurs in the oceans, but it also happens in a marine aquarium the causes are the same here is what happens and how to prevent it.
But what does coral bleaching mean for us and our seas read on to get the skinny on this phenomenon—and what can be done to lessen the impacts then, visit our adopt a coral reef page to find out what you can do to help us help coral reefs. Coral bleaching occurs when coral polyps expel algae that live inside their tissues normally, coral polyps live in an endosymbiotic relationship with this algae crucial for the health of the coral and the reef the algae provides up to 90% of the coral's energy.
Noaa declared the beginning of the third-ever global coral bleaching event in 2015 since then, all tropical coral reefs around the world have seen above-normal temperatures, and more than 70 percent experienced prolonged high temperatures that can cause bleaching. Coral reefs have an acute sensitivity to temperature and experience coral bleaching when they are overexposed burning coal, oil and gas adds carbon dioxide to the atmosphere, the same gas used to give soft drinks fizz. The great barrier reef has been affected by mass bleaching events widespread bleaching occurred in 1998 and again in 2002 in both of these years, bleaching was.
In both of these years, bleaching was recorded on 50-60 per cent of reefs more recently in the summer of 2006, reefs in the southern part of the great barrier reef were affected by bleaching.
What is coral bleaching when corals are stressed by changes in conditions such as temperature, light, or nutrients, they expel the symbiotic algae living in their tissues, causing them to turn completely white.