Australia is funding several hail-mary programs to keep the Great
Barrier Reef alive another decade or two in the face of global
heating.
Succeeding in this, would help the planet-roaster government resist
doing anything to limit global heating itself. Even making the attempt
will help that.
The article does not mention ocean acidification, which is the other
big effect of increased CO2 in the air.
In a few decades perhaps,
that will kill all corals, and many molluscs, crustacians, and
starfish. The excess CO2 may interfere with the thought processes of
fish, which could wipe out some species.