In mid-July, water surface temperatures averaged about 91 degrees off the lower Florida Keys, well above the average of 85 degrees, according to marine officials.
The heroic effort to save Florida s coral reef from devastating ocean heat downtoearth.org.in - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from downtoearth.org.in Daily Mail and Mail on Sunday newspapers.