Bleaching crisis – Known for its palm-peppered islands and beaches with crystalline waters, Thailand is strengthening its bid to conserve the environment and its vulnerable coral reefs.
Warming waters – El Niño, characterized by above-average ocean temperatures in the Pacific Ocean, has played a part in the bleaching phenomenon, according to the Marine National Park Division.
True scale of bleaching unknown – The MNPD has asked divers to help gather data or underwater photos for analysis.
Dying corals – Coral reefs are vulnerable to bleaching if water temperatures go and stay above 30.5 degrees Celsius, MNPD's director said.
Tourism versus the environment – The Department of National Parks is considering shutting down more islands and popular tourist attractions, including Phi Phi.