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Scientists say the
of the Tahiti reef means it is in
condition. Most of the world's reefs are in warmer waters. This makes them
to the bleaching effects of global warming. Tahiti's reef is deep
to protect it from bleaching. There is still sufficient
at 30 metres for coral to grow and reproduce. UNESCO said: "We think that
reefs may be better protected from global warming." It believes the Tahiti reef is "one of the most extensive
coral reefs on record". It added that more
of the deep ocean needs to be undertaken. It said: "We know more about the
of the Moon or the surface of Mars than the deeper
of the ocean."