This book provides a key to determine almost 300 phytoplankton species from the North Sea around Helgoland and Sylt, documenting them with close to 1100 images

Identifying Marine Phytoplankton is an accurate and authoritative guide to the identification of marine diatoms and dinoflagellates, meant to be used with tools

Marine Phytoplankton: A Guide to Naked Flagellates and Coccolithophorids provides an introduction to marine planktonic flagellates. It emphasizes the biological

They are also the basis for the oceanic food chain.