In the Gulf of Corcovado and the waters of Guaitecas Archipelago a variety of whales and dolphins can be been spotted, including: Peale's dolphins, black dolphins, bottlenose dolphins, humpback whales, minke whales and killer whales. The Gulf of Corcovado is "arguably the largest feeding and nursing ground for blue whales [...] in the entire Southern Hemisphere". All of this makes Guaitecas Archipelago a privilidged place for whale watching. In the localities of Piñihuil, Quellón and Melinka local fishermen offer whale watching tours.