Red snow (Watermelon snow)

Harding icefield in Alaska

Have you ever seen red colored snow ? Red snow or watermelon snow usually can be seen in spring or early summer when snow is thawing. Red snow is a common phenomenum on snow fields and glaciers in many parts of the world. Red snow is caused by blooming of snow algae. Microscopy of red snow shows red colored cells of snow algae.

Microscopy of red snow: many red cells can be seen A snow algal cell, Chlamydomonas nivalis.
Red snow in Tateyama, Japan Red snow patchs on Juneau Icefield, Alaska
See more about snow algae

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