re: #53 Kragar

Here, this will make you feel even better:

We’re eating through the oceans’ iron: scientists

Iron crucial for biomass, carbon storage

The known annual [seafood] catch represents from 0.5 to 2.0% of the iron content of the upper 4,000m of the oceans. “That doesn’t seem like much”, Moreno says, “but this goes on year after year.”

The availability of iron is not just a problem for fish. For years, scientists who study the global carbon dioxide circulation and its role in global warming have been theorising that a lack of iron keeps down the amount of biomass in the oceans, the Southern Ocean in particular, making the Earth miss out on a place where to store excess carbon.