Brazil occupies roughly half of South America, bordering the Atlantic Ocean.

An excerpt from the article 31 facts about Brazil

It occupies most of the eastern part of the South American continent and its geographic center, as well as various islands in the Atlantic Ocean.

It has the Fernando de Noronha archipelago, and several small islands and atolls in the Atlantic - Abrolhos, Atol das Rocas, Penedos de Sao Pedro e Sao Paulo, Trindade, and Martim Vaz.