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sea squirts on a mangrove root  

Did You Know?
Tunicates, or sea squirts, live on the roots of the red mangrove tree. These simple animals survive by filtering plankton out of seawater, and hold promise as the source of potent drugs used to fight tumors. Watch for them when snorkeling along Biscayne National Park's mangrove-fringed shoreline.

Last Updated: July 24, 2006 at 22:37 EST