Not eating yellow snow is obviously wise advice, but how about snow that looks like a poppy seed bagel? You should also avoid that too, because those “seeds” may actually be tiny critters commonly called snow fleas. While technically called springtails, snow fleas (Hypogastruna nivicola) are a springtail species active during winter. Snow fleas are generally found in groups and their dark-colored bodies are easily noticed against white snow. They don’t sting, bite, or suck your blood since they are much more interested in chomping up all of that nutritious plant matter.