CNN CNN Newsroom With Ana Cabrera September 22, 2021 17:50:00
Reefs. they're vital to global ecology and they are dying. wimberley is a lead instruct we are the group, diving with a purpose. what is your purpose? >> my purpose has morphed over time. >> at first, the avid rec diver of 30 years joined because the scuba diving group, founded 16 years ago, assembled mostly black divers to help look for a sunken slave ship. a watery tomb. spending so much time in the water, he noticed other mysteries. >> there's a lot less fish and a lot less coral. >> so he and his dive partner added an ecosystem monitoring program to the group's mission. they call it diving...