Sorry for my english ! Not knowing much about investing and stocks (I'm acting like a chicken little, according to Rich Dad and Poor Dad). But I learn something from your last statement because in US, eating tuna is not recommended due to mercury contamination. Not more than once a week or something like that and eat it in moderation. It seems in Korea such understanding is not prevailed. Or those sea food companies make money not only from Tuna but from other fish and tuna only makes a small profit. Different strategies and plans for investing!!