https://phys.org/news/2018-07-ne-australian-marine-heatwave-coral.html

It identified important changes in reef-animal communities that may affect the resilience of coral reefs, potentially reducing the capacity of corals to rebuild after mass bleaching.

Coral reefs are among the most valuable ecosystems on Earth, providing irreplaceable benefits to biodiversity and people. The World Heritage listed Great Barrier Reef is the largest coral reef system and a place of outstanding universal value.