Whale
The IWC has designated two whale sanctuaries: the Southern Ocean Whale Sanctuary, and the Indian Ocean Whale Sanctuary. The Southern Ocean whale sanctuary spans and envelopes Antarctica. The Indian Ocean whale sanctuary takes up all of the Indian Ocean south of 55°S. The IWC is a voluntary organization, with no treaty. Any nation may leave as they wish; the IWC cannot enforce any law it makes.
Whale watching
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.