Ah. How do the penguins get rid of their CO2 and get their oxygen? Specially designed digestive system? They will probably digesting food with oxygen in it? And fart out Carbon Dioxide? You know they have to be constantly eating, right? Just like we have to be constantly breathing.

I think designing oxygen-CO2 packs is easier. When they breathe out, the carbon is released from the pack, leaving only oxygen, for them to breathe in. That way, they won't need to get continuous refills of oxygen--just convert the compounds!

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We have successfully detonated a chain of bombs with magic fire here in the magic research lab. Some idiots who were standing too close to the bombs were killed, but who cares?