Little White will undergo training. (Photo: SEA LIFE TRUST Beluga Whale Sanctuary/for China Daily)
Iker Wang, head trainer at Chengfeng Ocean World in Shanghai, said people there have mixed feelings about the whales leaving.
"We'll be sad to see them leave but we understand they come from nature, so this project is allowing them to go back home," Wang said. "We all feel happy for Little Grey and Little White and I'm proud to be involved in what is an unprecedented global project."