Great tan in Antarctica?

If you live in a place such as Antarctica, Alaska and the Arctic you can keep dark skin due to the fact that a large percentage of their diet contains fish as they live in a coastal area. Fish contains a lot of vitamin D so you retain your tan without that many UV rays. Normally I would say "if you can't take the heat get out of the kitchen" but in this circumstance I would say if you can't take the heat go to Alaska and you'll keep your great tan.