Donning our snorkel gear, my son and I entered the tranquil bay. We’d been looking forward to spring break in Baja Mexico and had read about this spot in the guide book. But we were soon disappointed; there were few fish to see and most of the coral was damaged or dead. The unsuspecting tourist might not notice but as a trained marine biologist I know what a healthy reef looks like. This wasn’t it.
Coral reefs are under assault. Overfishing and coastal development are partly to blame, but ocean acidification is an emerging threat to corals and a host of other species that rely on calcium carbonate for their shells. As CO2 increases in the atmosphere, it dissolves in the ocean and it is changing the very chemistry of the sea.
And it’s happening now. Continue reading »