Scuba Diving

@dive_down_under
Stressed out!

What causes coral bleaching? Bleaching occurs when corals are under stress. A primary cause of coral bleaching on the Great Barrier Reef during summer is Climate change - heat stress from raised water temperatures and increased UV radiation. Coral reefs are also sensitive to freshwater and we have had plenty of rain! Continuing exposure can lead to bleaching and coral death.

When water is too warm, corals will expel the algae living in their tissues causing the coral to turn completely white. This is called coral bleaching. When a coral bleaches, it is not dead. Corals can survive a bleaching event, but they are under more stress and are subject to mortality.
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