Conservation activists urge post-pandemic tourism reset in Thailand

It is 9 a.m. on a sultry Sunday morning off the coast of Koh Phangan, a popular tourist island in the Gulf of Thailand. More than 30 divers are getting ready to plunge into the tropical waters — not to marvel at the underwater world but to spend the day removing kilometers of abandoned fishing nets that lie on the ocean floor, snagged on rocks and coral and suffocating marine life.

TOM VATER and LAURE SIEGEL