Friday, May 18, 2007

The Animal You’ve Never Seen

One of the more unusual species found here in Rock Creek Park is the tardigrade, also known as the water bear or the bear of the moss.

These little-known invertebrates are about the size of a pencil dot, so they are best seen under a microscope.

Learn more about tardigrades.

Photograph of tardigrades in one-eighth of a drop of water by David Liittschwager


Species Count: 277

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