Table 3. Numbers of marine benthic infaunal taxa in the three ocean provinces in Canada, organized in major taxonomic groups.
| Eastern Canada | Canadian Arctic | Western Canada | Canadian three oceans | |
| Annelida | 343 | 313 | 347 | 693 |
| Polychaeta | 342 | 306 | 331 | 673 |
| Arthropoda | 323 | 430 | 242 | 752 |
| Malacostraca | 291 | 385 | 203 | 673 |
| Maxillopoda | 16 | 3 | 25 | 34 |
| Ostracoda | 3 | 31 | 9 | 40 |
| Brachiopoda | 3 | 4 | 1 | 5 |
| Chordata | 14 | 21 | 0 | 32 |
| Cnidaria | 36 | 9 | 5 | 44 |
| Anthozoa | 17 | 7 | 4 | 24 |
| Hydrozoa | 18 | 2 | 0 | 19 |
| Echinodermata | 52 | 35 | 24 | 87 |
| Asteroidea | 14 | 11 | 2 | 22 |
| Holothuroidea | 14 | 7 | 7 | 22 |
| Ophiuroidea | 17 | 14 | 13 | 33 |
| Echiura | 1 | 1 | 1 | 3 |
| Ectoprocta | 8 | 3 | 0 | 10 |
| Hemichordata | 2 | 0 | 1 | 2 |
| Mollusca | 223 | 154 | 173 | 432 |
| Bivalvia | 92 | 70 | 92 | 185 |
| Gastropoda | 116 | 73 | 116 | 215 |
| Nematoda | 1 | 1 | 1 | 1 |
| Nemertea | 5 | 3 | 6 | 10 |
| Platyhelminthes | 3 | 1 | 2 | 4 |
| Porifera | 6 | 4 | 0 | 13 |
| Sipuncula | 8 | 10 | 8 | 20 |
| Others | 16 | 3 | 3 | 19 |
| Total | 1044 | 992 | 814 | 2127 |