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.
Captive killer whales
Captive killer whales are live killer whales (Orcinus orca) which are held in captivity by humans, often for breeding or performance purposes. The practice of capturing and displaying these whales in exhibitions began in the 1960s, soon becoming popular attractions at public aquariums and aquatic theme parks due to their intelligence, trainability, striking appearance, playfulness, and sheer size. As of September, 2016, there were 56 orcas in captivity worldwide, 33 of which are captive-born. There are 13 live orcas in the Seaworld parks.