The world is getting warmer. Coral bleaching occurred in almost all tropical oceans as far back as 1997. Reef areas in the Maldives, Sri Lanka, Kenya, Tanzania, and the Seychelles have been greatly affected by bleaching.
In 2002,the worst bleaching ever recorded occurred in the Great Barrier Reef. It affected 60 percent of surveyed reefs,and the damage was very severe in some areas. Most reefs survived, but full recovery of badly damaged reefs may take decades.
adapted from: Sea life scientist-Have you got what it takes to be a marine biologist.