Ice Fishing
If the thought of taking a fishing rod, auger, and stepping out into a frozen lake while on vacation doesn't sound like a typical way to spend one's free time, that's because it isn't. The ice fishing season in Yukon can start in the middle of winter and last well into spring, depending on the year. The light shining on the snow enhances the days, which frequently feature a clear, blue sky. The Yukon's waterways are home to a variety of freshwater plants and animals.
If you don't typically go ice fishing, rent all the clothing and equipment while you're here. Then go for that ice-fishing-chic parka and sunglasses outfit.
Snowmobiles are used to reach prime ice fishing spots. Once you're in place it's a matter of drilling holes through the ice to the freezing water below. Then simply bait your hook, drop the line, and patiently wait for something to bite.