Even if you don't believe CO2 is contributing to global warming, certainly the oceans are dramatically changing with pollution. We have the Great Pacific Garbage Patch: http://en.wikipedia.org/wiki/Great_Pacific_Garbage_Patch Coral Reefs are also dying off which impacts the entire ocean food chain: http://news.yahoo.com/s/ap/20100325/ap_on_sc/us_world_without_corals