[USA] It gets its name from its pinkish hue and also because of its smell, which is slightly sweet, just like a watermelon.
U.S. Geological Survey scientists Joe Giersch recently spotted the phenomenon at Glacier National Park and posted a photo to Instagram.
“Puddle near Grinnell Glacier filled with water from melted watermelon snow,” reads the photo’s description.
“Watermelon snow is formed by an algal species (Chlamydomonas nivalis) containing a red pigment in addition to chlorophyll. This pigment protects the algal chloroplast from solar radiation and absorbs heat, providing the alga with liquid water as the snow melts around it. As snow melts throughout the summer, the algae are concentrated in depressions on the snow surface (which further accelerates melting), with small populations persisting in puddles through the fall.”
View original article at: Pink snow that smells like watermelon seen in national park