Cape Horn. Today, Cape Horn and the surrounding Magallanes region are home to a wild ocean ecosystem. It includes abundant marine mammals and seabirds and the world’s southernmost kelp forest. In the Bárbara Channel, one of three channels connecting the Strait of Magellan and the Pacific Ocean. South American sea lions swim like torpedoes. And on the Diego Ramírez Islands, the southernmost inhabited outpost in the Americas, a variety of birds—including the black-browed albatross and rockhopper penguin—congregate at important nesting grounds.