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.
Jonah
The largest whales—baleen whales, a group which includes the blue whale—eat plankton and "it is commonly said that this species would be choked if it attempted to swallow a herring." As for the whale shark, Dr. E. W. Gudger, an Honorary Associate in Ichthyology at the American Museum of Natural History, notes that, while the whale shark does have a large mouth, its throat is only four inches wide, with a sharp elbow or bend behind the opening, meaning that not even a human arm would be able to pass through it. He concludes that "the whale shark is not the fish that swallowed Jonah."