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.
Wildlife of China
Baleen whales found in the ocean off China's coast include the blue whale, the world's largest animal, as well as the Eden's, Omura's, Bryde's, common minke, fin, sei, and humpback whale. There had been an endemic, resident population of fin whales in Yellow and Bohai Sea to East China Sea historically. Minke whales are also resident in the same regions. Bryde's whales were considered to be historical residents along Taiwan and southern coasts.