Well Tuvalu is on the equatorial water flow so of course its going to be warmer there.... the corals have evolved and grown in those stable waters.
Now are you referring to north GBR or south? off the Qld coast there are different conditions in which the corals have developed. When the warmest El Niño flows hit the GBR it raised the water temperature beyond tolerance for the corals which live there.
How inconvenient for you that anyone should so refute your propaganda.
https://www.aims.gov.au/docs/research/climate-change/coral-bleaching/coral-bleaching.htmlNot too hot, not too cold... it’s got to be just right
Corals are also fussy about the temperature of the water in which they live. Some cool water corals are happy with water temperatures of around 18°C, while lots of tropical corals live in waters with temperatures between 23 and 29°C. Some, like those in the Arabian Gulf, can experience temperatures up to 34°C or more.
Although most corals can cope with higher temperatures for short periods of time, they don’t like it if temperatures stay high for long periods—a coral that lives in 27°C water may cope with the water being 29°C for a day or two, but wouldn’t like to be in 31°C for a week.
https://www.science.org.au/curious/coral-bleaching
