lets concentrate on reducing our CO2 output, and let nature, as it seems to be doing, do its bit to remove the crap we already put there.
thats assuming CO2 is the problem...
CO2 is a convienient measurable and therefore taxable gas, whether it causes global warming is another matter (in fact it can be proven through the geological lifespan of the planet atmospheric CO2 level increases follow an increase in temperature, they do not drive them) im not saying that we do not have an effect on the planet only that CO2 production should not be our only focus, its simply been jumped on as an easy answer.
anyway back on topic, as fishkepers we should all know that algae and plankton are at the bottom of the aquatic food chain, surely stimulating their growth should help in time to restore our oceans rapidly depleting fish stocks...
as for my original point i think the diesel and zinc based paint from the boats is slightly more damaging, just look how much sea life lives on shipwrecks, if it was damaging nothing would live there. in fact shipwrecks
create ecosystems