Not to mention that increased ocean acidity via carbonic acid - ie: the introduction of C02 into ocean water - is its own little nightmare, given its catastrophic effects on coral reef reliant systems.
And then: what is the change in atmospheric CO2 levels in the past several centuries?
In all, I'm having a hard time believing that man-made atmospheric CO2 is creating biologically significant carbonic acid concentrations in ocean water near reefs.
[citation needed]
http://www.sciencemag.org/cgi/content/abstract/318/5857/1737