Species: Ceratium hirundinella
| Site | Municipality (county) | Num. obs. | Num. species | Num. images | Last obs. | |
|---|
| Abbortjernet | Innlandet, Norway | 1 | 1 | 0 | 1989-08-22 | |
| Akersvannet | Vestfold, Norway | 3 | 1 | 0 | 1994-09-20 | |
| Borrevannet | Vestfold, Norway | 1 | 1 | 0 | 2003-05-19 | |
| Buvatnet | Møre og Romsdal, Norway | 1 | 1 | 0 | 1989-09-12 | |
| Dælivannet | Akershus, Norway | 2 | 1 | 0 | 1991-09-07 | |
| Fløyta | Akershus, Norway | 2 | 1 | 0 | 1990-06-07 | |
| Frøylandsvatnet | Rogaland, Norway | 3 | 1 | 0 | 1993-09-29 | |
| Granavatnet | Trøndelag, Norway | 5 | 1 | 0 | 1993-08-31 | |
| Gullerudtjern | Buskerud, Norway | 2 | 1 | 0 | 1991-06-06 | |
| Hammervatnet | Trøndelag, Norway | 1 | 1 | 0 | 1994-06-18 | |
| Hauskjevatnet | Rogaland, Norway | 1 | 1 | 0 | 1989-09-13 | |
| Hegglandsvatnet | Vestland, Norway | 1 | 1 | 0 | 1993-06-02 | |
| Hjørungdalsvatnet | Møre og Romsdal, Norway | 1 | 1 | 0 | 1990-05-29 | |
| Jarenvannet | Innlandet, Norway | 6 | 1 | 0 | 1996-09-18 | |
| Kjemsjøen | Innlandet, Norway | 1 | 1 | 0 | 1990-09-17 | |
| Korssjøen | Vestfold, Norway | 5 | 1 | 0 | 1994-09-05 | |
| Kvitblikkvannet | Nordland, Norway | 1 | 1 | 0 | 1990-09-04 | |
| Laksådalsvatnet | Nordland, Norway | 1 | 1 | 0 | 1989-09-14 | |
| Lauvtjønna | Trøndelag, Norway | 1 | 1 | 0 | 1993-09-06 | |
| Ljøgodttjern | Akershus, Norway | 1 | 1 | 0 | 1993-08-30 | |
| Midsjøvannet | Akershus, Norway | 1 | 1 | 0 | 1993-09-19 | |
| Mosvatnet | Rogaland, Norway | 3 | 1 | 0 | 1993-06-03 | |
| Rossevatn | Rogaland, Norway | 5 | 1 | 0 | 1993-05-25 | |
| Røldalstjørnet | Vestland, Norway | 1 | 1 | 0 | 1989-09-14 | |
| Rørvatnet | Møre og Romsdal, Norway | 2 | 1 | 0 | 1990-06-14 | |
| Semsvannet | Akershus, Norway | 1 | 1 | 0 | 1993-05-26 | |
| Skjelbreidvatnet | Vestland, Norway | 1 | 1 | 0 | 1989-09-13 | |
| Stavsjø | Innlandet, Norway | 9 | 1 | 0 | 1993-09-24 | |
| Stokkavatnet | Nordland, Norway | 2 | 1 | 0 | 1990-09-18 | |
| Storavatnet | Vestland, Norway | 3 | 1 | 0 | 1993-09-02 | |
| Sundkilen | Telemark, Norway | 2 | 1 | 0 | 1990-06-01 | |
| Svanevatnet | Rogaland, Norway | 1 | 1 | 0 | 1991-06-18 | |
| Tornesvatnet | Rogaland, Norway | 2 | 1 | 0 | 1994-09-05 | |
| Tretjønnet | Agder, Norway | 2 | 1 | 0 | 1990-06-26 | |
| Tømmervatnet | Troms, Norway | 1 | 1 | 0 | 1994-09-16 | |
| Vikerauntjønna | Trøndelag, Norway | 5 | 1 | 0 | 1994-09-20 | |
| Vålåsjøen | Innlandet, Norway | 1 | 1 | 0 | 1993-06-09 | |
| Årungen | Akershus, Norway | 1 | 1 | 0 | 1996-09-16 | |
| Åstveitvannet | Vestland, Norway | 4 | 1 | 0 | 1991-09-27 | |