The original ID Leaflet series is dedicated to plankton. It provides standard keys for the identification of the major phytoplankton and zooplankton species in the North Atlantic. Antonina dos Santos and Claudia
Castellani are the series co-editors.
The latest ID Leaflet series is dedicated to diseases and parasites of fish and shellfish. It provides diagnostic aids for identifying the most important diseases and parasites of fish and shellfish in the North Atlantic and adjacent seas. The current series editor is Stephen W. Feist.
Both series are available online.
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