Zoogeographical zonation of the Southern Ocean

ZOOGEOGRAPHIC CODES
- E = East Antarctic sub-region
- W = West Antarctic sub-region (excluding South Georgia)
- G = South Georgia district
- S = Subantarctic islands sub-region
- M = Magellanic sub-region
- T = Tristan da Cunha district
For hyperiids and widely distributed pelagic gammarids:
- An = Antarctic region
- Sa = Subantarctic region
- + indicates that the species occurs outside the corresponding region
- ++ indicates that the species is cosmopolitan or widely distributed in other oceans
HABITAT CODES
- P = pelagic
- N = neritic
- MP = mesopelagic
- BP = bathy- or abyssopelagic
- B, Ba = bathyal (slope) in Subantarctic or Antarctic regions
- Ab = abyssal (below 2000m)
- + indicates that the species occurs above the upper limit of the corresponding zone
- F = freshwater