Coral Bleaching & Climate Change

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When water is too warm, corals will expel the algae (zooxanthellae) 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.

Blocks. The figure tag make adding a caption below the picture possible. The picture tag makes multiple pictures possible, and places the img, an inline element, in a block element.