<p>MIAMI, Florida (CNN) -- Researchers who have been studying a giant, mysterious area of "black water" in Florida Bay say it seems to be associated with a diatom, a type of algae.</p>
<p>The algae was found in the water, according to Scott Willis at the Florida Fish and Wildlife Conservation Commission, and the black water may be an algal bloom -- an explosion of microscopic marine life. Algal blooms are not rare in Florida waters, but blooms of this size are.</p>