A 2023 marine heat wave in the central Red Sea caused 100% of monitored sea anemones to bleach, followed by the death of 94-100% of clownfish and 66-94% of the anemones across three surveyed reefs.

(CNN) — Clownfish, a small orange and white species made famous by the “Finding Nemo” movies, have been found to shrink in order to boost their chances of surviving marine heat waves, according to a ...

When Morgan Bennett-Smith descended to a familiar reef in the central Red Sea in September 2023, he expected to find the same tagged anemones and resident clownfish he had been monitoring for months.