Acartia (Acanthacartia) intermedia (Poppe, 1885) accepted as Acartia bifilosa (Giesbrecht, 1881) represented as Acartia (Acanthacartia) bifilosa (Giesbrecht, 1881) (basis of record)
Acartia intermedia (Poppe, 1885) represented as Acartia (Acanthacartia) intermedia (Poppe, 1885) accepted as Acartia bifilosa (Giesbrecht, 1881) represented as Acartia (Acanthacartia) bifilosa (Giesbrecht, 1881) (basis of record)
Calanus parvus Claus, 1863 accepted as Paracalanus parvus (Claus, 1863) represented as Paracalanus parvus parvus (Claus, 1863) (basis of record)
Calanus parvus Claus, 1863 accepted as Paracalanus parvus (Claus, 1863) represented as Paracalanus parvus parvus (Claus, 1863) (source of synonymy)
Cyclopina elegans Scott T., 1894 accepted as Cyclopinodes elegans (Scott T., 1894) (additional source)
Cyclopina gracilis Claus, 1863 (additional source)
Ectinosoma atlanticum (Brady & Robertson, 1873) accepted as Microsetella norvegica (Boeck, 1865) (basis of record)
Ectinosoma atlanticum (Brady & Robertson, 1873) accepted as Microsetella norvegica (Boeck, 1865) (source of synonymy)
Eurytemora velox (Lilljeborg, 1853) (additional source)
Euterpe acutifrons (Dana, 1847) accepted as Euterpina acutifrons (Dana, 1847) (basis of record)
Microsetella atlantica Brady & Robertson, 1873 accepted as Microsetella norvegica (Boeck, 1865) (basis of record)
Temora velox Lilljeborg, 1853 accepted as Eurytemora velox (Lilljeborg, 1853) (basis of record)
Temora velox Lilljeborg, 1853 accepted as Eurytemora velox (Lilljeborg, 1853) (source of synonymy)

Delta area for Acartia bifilosa (Giesbrecht, 1881) 
Delta area for Centropages hamatus (Lilljeborg, 1853) 
Delta area for Eurytemora hirundoides (Nordquist, 1888) 
Delta area for Pseudocalanus elongatus (Brady, 1865) 
Delta area for Temora longicornis (Müller O.F., 1785) 
Elbe for Acartia intermedia (Poppe, 1885) 
Ems for Acartia intermedia (Poppe, 1885) 
English Channel for Cyclopina gracilis Claus, 1863 
English Channel for Metridia lucens Boeck, 1865 
German Bight for Metridia lucens Boeck, 1865 
Haringvliet for Acartia (Acanthacartia) intermedia (Poppe, 1885) 
Haringvliet for Eurytemora affinis (Poppe, 1880) 
Helgoland for Cyclopina gracilis Claus, 1863 
Hollands Diep for Eurytemora affinis (Poppe, 1880) 
North Sea for Acartia (Acartiura) clausi Giesbrecht, 1889 
North Sea for Acartia bifilosa (Giesbrecht, 1881) 
North Sea for Acartia longiremis (Lilljeborg, 1853) 
North Sea for Anomalocera patersoni Templeton, 1837 
North Sea for Calanus finmarchicus (Gunnerus, 1770) 
North Sea for Candacia pectinata Brady, 1878 
North Sea for Centropages hamatus (Lilljeborg, 1853) 
North Sea for Centropages typicus Krøyer, 1849 
North Sea for Corycaeus anglicus Lubbock, 1857 
North Sea for Cyclopina gracilis Claus, 1863 
North Sea for Cyclopina littoralis (Brady, 1872) 
North Sea for Euterpe acutifrons (Dana, 1847) 
North Sea for Isias clavipes Boeck, 1865 
North Sea for Labidocera wollastoni (Lubbock, 1857) 
North Sea for Microsetella atlantica Brady & Robertson, 1873 
North Sea for Monstrilla anglica Lubbock, 1857 
North Sea for Monstrilla dubia Scott T., 1904 
North Sea for Monstrilla gracilicauda Giesbrecht, 1893 
North Sea for Monstrilla grandis Giesbrecht, 1891 
North Sea for Monstrilla helgolandica Claus, 1863 
North Sea for Monstrilla longiremis Giesbrecht, 1893 
North Sea for Oithona nana Giesbrecht, 1893 
North Sea for Oithona plumifera Baird, 1843 
North Sea for Oithona similis Claus, 1866 
North Sea for Paracalanus parvus (Claus, 1863) 
North Sea for Parapontella brevicornis (Lubbock, 1857) 
North Sea for Pseudocalanus elongatus (Brady, 1865) 
North Sea for Temora longicornis (Müller O.F., 1785) 
North Sea for Thaumaleus claparedi Giesbrecht, 1893 
North Sea for Thaumaleus germanicus Timm, 1893 
North Sea for Thaumaleus longispinosus (Bourne, 1890) 
North Sea for Thaumaleus rostratus Scott T., 1904 
North Sea for Thaumaleus thompsoni Giesbrecht, 1893 
North Sea for Thaumaleus zetlandicus Scott T., 1904 
Oosterschelde for Acartia (Acartiura) clausi Giesbrecht, 1889 
Oosterschelde for Acartia bifilosa (Giesbrecht, 1881) 
Oosterschelde for Centropages hamatus (Lilljeborg, 1853) 
Oosterschelde for Euterpe acutifrons (Dana, 1847) 
Oosterschelde for Oithona nana Giesbrecht, 1893 
Oosterschelde for Temora longicornis (Müller O.F., 1785) 
Scotland for Cyclopina elegans Scott T., 1894 
Southern Bight for Thaumaleus thompsoni Giesbrecht, 1893 
Wadden Sea for Acartia (Acartiura) clausi Giesbrecht, 1889 
Wadden Sea for Acartia bifilosa (Giesbrecht, 1881) 
Wadden Sea for Acartia discaudata (Giesbrecht, 1882) 
Wadden Sea for Centropages hamatus (Lilljeborg, 1853) 
Wadden Sea for Centropages typicus Krøyer, 1849 
Wadden Sea for Corycaeus anglicus Lubbock, 1857 
Wadden Sea for Cyclopina littoralis (Brady, 1872) 
Wadden Sea for Eurytemora hirundoides (Nordquist, 1888) 
Wadden Sea for Euterpe acutifrons (Dana, 1847) 
Wadden Sea for Labidocera wollastoni (Lubbock, 1857) 
Wadden Sea for Microsetella atlantica Brady & Robertson, 1873 
Wadden Sea for Oithona nana Giesbrecht, 1893 
Wadden Sea for Paracalanus parvus (Claus, 1863) 
Wadden Sea for Pseudocalanus elongatus (Brady, 1865) 
Wadden Sea for Temora longicornis (Müller O.F., 1785) 
West Coast of England for Cyclopina gracilis Claus, 1863 

 Biology

 for Metridia lucens Boeck, 1865

Bioluminating species, which is rarely observed in copepod species. [details]

 Distribution

 for Calanus finmarchicus (Gunnerus, 1770)

C. helgolandicus, a congener species of C. finmarchicus, might have a more southern distribution. [details]

 Distribution

 for Calanus helgolandicus (Claus, 1863)

C. helgolandicus might have a more southern distribution compared to the one of the congener species C. finmarchicus. [details]

 Distribution

 for Oithona plumifera Baird, 1843

(By that time?) this species rarely passes south of the Doggerbank. [details]

 Distribution

 for Oncaea subtilis Giesbrecht, 1893

Several species of these occur in the North Sea and the English Channel., but due to their small size (0.5-1 mm) ... [details]