French researchers studying Pacific coral reefs have warned that limits proposed in the Paris Agreement won't be enough to save them.
The Tara Foundation and France's National Center for Scientific Research have found that in some locations up to 90 percent of coral has been bleached.
In a statement, they said Samoa's islands had been severely impacted but also Kiribati and Tuvalu where some coral had died off.
The research mission, which has visited 15 countries, said on the other hand, the reefs in Wallis and Futuna had been largely spared.
It found that the warmer the water has become the more likely reefs get stressed and bleached.
Reefs account for 0.2 percent of the ocean's area but host about 30 percent of the sea's biodiversity.