Divers turn conservationists as corals bleach worldwide

Nannalin Pornprasertsom is one of a growing number of scuba divers learning conservation and citizen science techniques as coral reefs experience a fourth global bleaching event. After a two-week course in Koh Tao, the 14-year-old can identify coral types, carry out reef restoration, and help scientific research on coral health by recording the colour and tone of outcroppings at dive sites. "It's just something that I can do that will have a good consequence for the environment," Nannalin, who has been diving since she was 12...