Overview: With over 11,000 dives behind him, spanning more than 30 years; John Stoneman has seen countless numbers of coral reefs and witnessed the changes that have occurred over time due to man's influence and destructive actions. Using videotapes of footage from 25 years ago, his foundation researchers make comparisons between the reefs of the past and those of today. In many cases, they are both surprised and shocked by what they find.