<p><strong>Fig. 2.37.</strong> &nbsp;(<strong>B</strong>) <em>Karenia </em><em>brevis</em> is one of several dinoflagellate species thought to cause red tides that are harmful to humans.</p>

Fig. 2.37.  (B) Karenia brevis is one of several dinoflagellate species thought to cause red tides that are harmful to humans.