Glacier mice

Free-moving globular moss colonies found on and near glaciers

Glacier mice are colonies of mosses found on some glaciers and adjacent ecosystems. They are composed of multiple species of moss and can also host other species, such as nematode worms, springtails, and water bears. Although what preconditions are necessary for glacier mice to form has yet to be determined, they have been observed in Alaska, Chile, Greenland, Iceland, Svalbard, Uganda and Venezuela, as well as several Subantarctic islands. In at least some cases, glacier mice apparently reproduce asexually due to the effect of the harsh glacier environment on traditional moss reproduction strategies.

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