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.
Pygmy blue whale
The pygmy blue whale ("Balaenoptera musculus brevicauda") is a subspecies of the blue whale ("Balaenoptera musculus") found in the Indian Ocean and the southern Pacific Ocean.