The pinkish orangey hues of Antarctica’s Danger Islands aren’t due to minerals in the rocks or lichens covering them. Instead, the color comes from the islands’ iconic black and white inhabitants.
Dense colonies of Adélie penguins on Antarctica’s islands and coasts produce large quantities of guano, extensive enough to be seen in satellite images. The color of the droppings can even provide clues into the penguins’ diet, since krill tints the guano pink, giving…
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Source science.nasa.gov
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