General
| ALGAE – An Introduction with Photographs | Smithsonian Institution, National Museum of Natural History | |
| A Bank of Digital Resources for Teaching Biology | University of Ottawa | |
| Botany: Algen | ETH Zürich | |
| Botany Online – Algen | University of Hamburg, Faculty of Biology | |
| Ecological Information about Marine Flora | Monterey Bay Aquarium Research Institute (MBARI) | |
| Education Center | Phycological Society of America | |
|
Information about Scaled Crysophytes and Diatoms (The Silica Secchi Disk) |
Conneticut College | |
| Marine Botany | University of Guam, Division of Natural Sciences |