The condition of the Great Barrier Reef escalated from “significant concern” to “critical,” according to a report from the International Union for Conservation of Nature.

“A comparison between 2017 and 2020 shows that a total of 24 sites changed their overall conservation outlook, with 16 deteriorating and only 8 improving,” according to the IUCN’s report. “This is a marked shift in the pattern from 2017, when almost equal numbers of sites either improved (14) or deteriorated (12) compared to 2014. Worryingly, two sites have entered the critical category since 2017: the Great Barrier Reef (Australia) and the Islands and Protected Areas of the Gulf of California (Mexico).”