Linked from
The 58 pages that link to Southern Ocean, each with the reason it gives.
AntarcticaNarrower topic: Its currents and sea ice form the marine boundary around the continent.
KrillNarrower topic: This ocean contains the largest concentrations of Antarctic krill.
Antarctic sea iceNarrower topic: Antarctic sea ice forms across this ocean's surface.
Cape HornNarrower topic: Cape Horn lies at the northern edge of the ocean’s circumpolar waters.
SubantarcticNarrower topic: The Subantarctic occupies its northern reaches and adjoining islands.
Ross SeaNarrower topic: The Ross Sea is a marginal sea within this circumpolar ocean.
South Shetland IslandsNarrower topic: The archipelago is part of this circumpolar ocean region.
Bransfield StraitNarrower topic: The strait is a regional passage within this circumpolar ocean.
Bellingshausen SeaNarrower topic: The Bellingshausen Sea is one of its marginal seas.
Scotia SeaNarrower topic: The Scotia Sea is one of its marginal seas.
South Orkney IslandsNarrower topic: The archipelago lies within this circumpolar ocean.
Balleny IslandsNarrower topic: The Balleny Islands lie within this ocean, far from major landmasses.
ChannichthyidaeNarrower topic: It is the principal marine habitat of living channichthyids.