After two years of record-breaking ocean heat, scientists are assessing the impacts of the world’s fourth mass bleaching event on coral reefs around the globe. At least 74 countries and territories are confirmed to have experienced coral bleaching since the spring of 2023.
As coastal development, pollution and climate change put increasing stress on the world’s oceans, tropical reefs are losing reef-building corals at unprecedented rates. These corals – species with rigid skeletons, such as elkhorn and brain corals – are the architects of these ecosystems, providing the foundations for coral reef communities.
