Tunicate <I>Botryllus planus</I> (IMAGE)
Caption
This is the tunicate Botryllus planus. Colonial tunicates like this one are made of hundreds of tiny zooids that act as a single organism. The Smithsonian Environmental Research Center has created an online public database to provide key information about the non-native marine species throughout the nation.
Credit
Rosana Rocha, Universidade de Federal de Paraná, Brazil
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