Subregions- Antarctic Peninsula
 - Drake Passage
 - east of the South Sandwich Islands
 - Falkland Islands region
 - Isla Hoste, Magallanes, Chile
 - Isla Navarino region, Magallanes, Chile
 - off the coast of Tierra del Fuego
 - Scotia Sea
 - South Georgia Island region
 - South Georgia Rise
 - South Sandwich Islands region
 - South Shetland Islands
 - southwestern Atlantic Ocean
 - Tierra del Fuego
 - Tierra del Fuego, Argentina
 - Tierra del Fuego, Argentina region
 - Tierra del Fuego, Magallanes, Chile
 - Weddell Sea

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