The book covers phytoplankton and some planktonic colourless forms like choanoflagellates and tintinnids found in north European coastal and adjacent oceanic waters (North Sea, Norwegian Sea and Barents Sea). The species descriptions are based on criteria observed in the light microscope, but for some critical species with reference to electron microscopical details.
Translation of "Norsk Kystplanktonflora" (2003) - this English version has the same number of pages, but appears to be in a smaller format.