What separates South America from Antarctica?

We open an atlas or a geographic map of the world and give an answer from the picture. We see that the separation of Antarctica and South America is impeded by the Drake Passage, one of the largest in the world; cold current of westerly winds; The Antarctic Circle; South Islands. Further, for a more extensive answer, we look at the geological map of the world and observe that the continents are located on different seismic plates: Antarctic and South American, this fact also affects the remoteness of continents from each other.