Diatoms are microscopic, photosynthetic cells in coastal ocean surface waters whose populations increase (bloom) in fall and winter.
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| | 1. | | 2. Eucampia, a chain-forming diatom | | 3. Thalassionema, a chain diatom | | 4. Chaetoceros, a diatom common in northeastern U.S. waters | | 5. Thalassiosira, a chain-forming diatom | | 6. Pleurosigma, a single-celled diatom found in costal northeast waters | | 7. The diatom Licmophora, found in coastal waters off Woods Hole, Mass. | Last updated: December 10, 2012 |