I think that would make an interesting poll... how many people read it as "Which are okay to eat - for our planet" and how many read it as "Which are okay to eat - for my health"?
Funnily enough my little lad asked me randomly "can we have cod". I'm conscious that we should only eat tuna once a week (line caught seems hot at the moment) but don't eat much fish and hadn't thought about mercury/environmental chemicals for other catches.
