Table 1. Numbers of extant marine phytoplankton taxa in Canada's three ocean provinces and one ecoregion (Hudson Bay).
| Pacific Ocean | Canadian Arctic | Hudson Bay | Atlantic Ocean | Canada three oceans TOTAL | |
| Archaeplastida/Chloroplastida | |||||
| Chlorophyta | 5 | 21 | 17 | 4 | 35 |
| Prasinophyta | 7 | 28 | 21 | 27 | 52 |
| Chromalveolata/Alveolata/Dinozoa/Dinoflagellata | |||||
| Dinophyceae (dinoflagellates) | 103 | 195 | 150 | 190 | 368 |
| Chromalveolata | |||||
| Cryptophyceae | 4 | 15 | 6 | 8 | 24 |
| Chromalveolata/Haptophyta | |||||
| Prymnesiophyceae | 21 | 26 | 12 | 41 | 68 |
| Chromalveolata/Stramenopiles | |||||
| Coscinodiscophyceae | 181 | 172 | 113 | 161 | 313 |
| Fragilariophyceae | 32 | 68 | 38 | 29 | 95 |
| Bacillariophyceae | 110 | 393 | 130 | 84 | 522 |
| Bacillariophyta (diatoms) | 323 | 633 | 281 | 274 | 930 |
| Bicosoecida | 0 | 5 | 3 | 3 | 8 |
| Chrysophyceae | 6 | 12 | 16 | 18 | 37 |
| Dictyochophyceae | 4 | 11 | 6 | 6 | 14 |
| Rhaphidophyceae | 3 | 2 | 0 | 1 | 4 |
| Synurales | 0 | 3 | 0 | 0 | 3 |
| Xanthophyceae | 0 | 1 | 0 | 0 | 1 |
| Excavata/Euglenozoa | |||||
| Euglenida | 2 | 11 | 8 | 8 | 20 |
| Kinetoplastea | 1 | 3 | 5 | 3 | 8 |
| Opisthokonta | |||||
| Choanomonada | 0 | 16 | 28 | 29 | 39 |
| Cyanophyceae | 0 | 2 | 2 | 0 | 4 |
| Incertae sedis | 3 | 18 | 31 | 14 | 42 |
| TOTAL PHYTOPLANKTON | 482 | 1002 | 586 | 626 | 1657 |
Literature used for Western Canada [189], [190], [191], [192], [193], [194], [195], Canadian Arctic [88], [89], [196], [197], [198], [199], [200], [201], [202], [203], [204], [205], [206], [207], [208], [209], [210], [211], [212], [213], [214], [215], [216], [217], [218], [219], [220], [221], [222], [223], Hudson Bay [224], [225], [226], [227], [228], [229], [230], [231], [232], [233], [234], and Eastern Canada [86], [87], [235], [236], [237], [238], [239], [240], [241], [242].
Grouped by major taxonomic ranks in the four supergroups as described by [84].