Meltdown

If [pressures on reefs are ]left unchecked, more than 90 percent of reefs will be threatened by 2030 and nearly all reefs will be at risk by 2050.

-- Reefs at Risk revisited.

Thomas Goreau says:

These are the usual underestimates by people who never saw the reefs when they were good, and only began monitoring after most of the corals were gone! 90% of coral reefs are ALREADY severely damaged, and ALL probably will be within another 5 years.