75% of Coral Reefs threatened

(CNN) -- Human activity and climate change have left about 75% of the world's coral reefs threatened, putting the livelihoods of many countries that depend on the ocean ecosystems at risk, according to a report released this week.
Local threats such as overfishing, coastal development, and watershed- and marine-based pollution are responsible for the immediate and direct threat to more than 60% of the world's reefs. Add to that thermal stress from rising ocean temperatures and the number of threatened reefs jumps to 75%, the World Resources Institute found in the report, titled "Reefs at Risk," released Wednesday.

http://www.cnn.com/2011/WORLD/asiapcf/02/25/world.coral.reefs/index.html?iref=allsearch