Coral reefs across the globe once again endure mass bleaching amid warming oceans, scientists say Coral reef bleaching across happens when stressed coral expel the algae that are their food source ...

In late April, reports come in from Tahiti that the reef was bleaching, and fast. Coral bleaching happens when warm waters cause corals to expel the algae living in their tissues and turn white.

An underwater investigation of coral bleaching in the South Pacific By Justin Worland | Photographs by XL Catlin Seaview Survey Richard Vevers has traveled the globe to photograph coral reefs ...