Antarctica, one continent or two?

Abstract

In outline, the Antarctic continent crudely resembles a pear. It is indented on two sides by arms of the ocean, the Ross and Weddell Seas. These indentations are even greater than an outline map would suggest, for the seas extend far toward the interior of the continent beneath the world's two largest floating ice shelves, bearing the names of their respective discoverers, the English sea captain, Ross, and the German explorer, Filchner.