Groups of corals release all of their eggs and sperm once a year, but the timing of their spawning is under threat from climate change.

Mycale grandis teams up with microbes housed inside it to gather nutrients.

Bleaching killed 34 percent of the island’s reefs between 2013 and 2017, a study finds.

Runoff and waste may be more harmful to the animals than climate change.

A 3-D simulation shows corals growing into a community.

Coral reefs near Maui, Hawaii, show signs of erosion due to excess nutrients from wastewater.

Stony coral tissue loss disease has already affected 80 percent of Florida’s coastal reef system. Now, a huge team of responders is working to slow its spread and prepare for future restoration efforts.

Diverse plots of corals appeared healthier than monocultures at the end of a 16-month study.

Gates was director of the Hawaii Institute of Marine Biology and a strong advocate for coral conservation.