Voices of Science: Coral Bleaching in the Pacific

Kaloko-Honokohau Reef: 2014 vs. 2015
healthy reef: greens and browns visible on the coral bleached white coral


The Hawai'i Voices of Science episodes tell natural resource stories on Hawai'i Island.

Coral bleaching is a global crisis. Warmer water temperatures cause corals to react by expelling algae, called zooxanthellae, leaving stark white corals in their wake. If corals stay bleached for too long, the whole reef could die. Our reefs are home to a wide variety of sea life, and to lose this biodiversity would be devastating. But reef biologists in Kaloko-Honokohau say there’s still time to help control the warming that’s underway.


Last updated: September 20, 2019