Isn’t the Great Reef something like 500,000 years old.
Don't know. If so, that means it's been high & dry at least four times during the roughly 100k year ice cycles. It's also mean the in the last half a million years the very existence of the reef is the exception, not the rule.
In the last million years our current climate in it's entirety is the exception. 100,000 years of cold, 10 - 14 thousand of warm, if I recall correctly.
This WEATHER CONTROL scheme that the green libs are selling is an attempt to control that which they do not understand for gain of money or power, and as such are nothing more than traveling rainmakers of the past scamming small towns and communities of their savings then moving on to the next sucker.