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.
Omura's whale
Omura's whale appears to be restricted to the shelf and deep waters of tropical and subtropical regions, with records from the Indian (including the Strait of Hormuz, Madagascar, Thailand, Malaysia, off Cocos Islands, Sri Lanka, and Western and South Australia), the Pacific (including Borneo and Indonesia, the Philippines, Hong Kong, China, Taiwan, the Sea of Japan, the Seto Inland Sea, the Timor Sea, Queensland (Eastern Australia), New Caledonia, and the Solomon Sea) and in the Atlantic Ocean (Mauritania and Brazil).