Don't Eat the Watermelon Snow!

Watermelon snow, a pink snow with a watermelon scent, is caused by the algae Clemidemonas Novalis. Historically noted by Aristotle and Captain John Ross, its color is due to a red carotenoid pigment that protects the algae from solar radiation. The algae thrive in high altitudes, adapting to harsh conditions. They become active in spring, moving towards the snow's surface as it melts. Watermelon snow is found globally, but consuming it may cause digestive issues. The algae's life cycle and environmental interactions support other organisms in snowy regions.

How do algae in watermelon snow adapt to high levels of solar radiation?

What are sun cups and how do they form in watermelon snow?