Photo of the Day

freshwater mollusk tentacles
November 18, 2012

Freshwater Mollusks

This Month in Photo of the Day: 2012 National Geographic Photo Contest Images

These are tentacles from freshwater mollusks know as bryozoa, similar to soft coral in the sea. They are aquatic colonial animals that grow on the rocks, branches, and leaves under the water.

(This photo and caption were submitted to the 2012 National Geographic Photo Contest.)

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Photograph by Yuanqi Wu

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