Three seal pups enter "seal kindergarten" at Harbin Polarland

Three seal pups swim in water at the Harbin Polarland in Harbin, northeast China's Heilongjiang Province, on April 29, 2019. Three seal pups entered a "seal kindergarten", which was put into service at Harbin Polarland recently. All three are less than 3 months old and will play and grow together. (Xinhua/Wang Jianwei)