Sad news .... lots of it lately:
Unusually warm ocean temperatures in the summer and fall of 2005 caused a mass die-off of Caribbean corals that is the worst ever recorded there, according to new research published yesterday in the online journal PLoS ONE.
More than 80 percent of corals bleached and over 40 percent died at many sites in the Caribbean and Gulf of Mexico that year, the study says, arguing the 2005 event will have long-term consequences for the health of reefs.
Such events are also likely to become more common as global warming continues, concludes a team of 65 authors in 22 countries. They predict "a troubled future for tropical marine ecosystems under a warming climate."
http://www.scientificamerican.com/article.cfm?id=caribbean-coral-die-off