I have seen, since I've lived here in Siargao (just 10 years now) the slow deterioration of the lagoon in front of us, with slimy green algae growing where none did before, shattered and bleached coral reefs, etc.
But I didn't know about this horror to come:
CO2 Pollution Could Erase Coral Reefs (from Wired Science)
It is truly a horrible prospect:
" While most of the attention on the impacts of carbon dioxide emissions has focused on its ability to act as a greenhouse gas, that warms the earth's climate, the changes CO2 emissions will bring to the world's oceans are receiving increasing attention. The more CO2 in the atmosphere, the more of it that dissolves into surface ocean water. That small chemistry change could cause huge changes in marine biology.
Marine organisms, like coral, that build skeletons out of calcium could find themselves unable to do so. If current emissions trends continue over the next decade, the world's marine creatures will be dealing with what's essentially an alien ocean. The last time ocean conditions like those predicted for mid-century existed was long before humans walked the earth".
Not only coral, but shellfish, would be affected. Imagine walking along a beach (if there are any after sea-level rises) and finding the only things washed up were plastic waste and greeny-brown scum, and no sea shells at all.