Photo taken on Feb. 13, 2019 shows a seal cub at Harbin Polarland in northeast China's Heilongjiang Province. Seal "Sha Sha" gave birth to a cub at Harbin Polarland. (Xinhua/Wang Jianwei)
Photo taken on Feb. 13, 2019 shows a seal cub and its mother at Harbin Polarland in northeast China's Heilongjiang Province. Seal "Sha Sha" gave birth to a cub at Harbin Polarland. (Xinhua/Wang Jianwei)
Photo taken on Feb. 13, 2019 shows a seal cub at Harbin Polarland in northeast China's Heilongjiang Province. Seal "Sha Sha" gave birth to a cub at Harbin Polarland. (Xinhua/Wang Jianwei)
Photo taken on Feb. 13, 2019 shows a seal cub at Harbin Polarland in northeast China's Heilongjiang Province. Seal "Sha Sha" gave birth to a cub at Harbin Polarland. (Xinhua/Wang Jianwei)
Photo taken on Feb. 13, 2019 shows a seal cub at Harbin Polarland in northeast China's Heilongjiang Province. Seal "Sha Sha" gave birth to a cub at Harbin Polarland. (Xinhua/Wang Jianwei)
Photo taken on Feb. 13, 2019 shows a seal cub at Harbin Polarland in northeast China's Heilongjiang Province. Seal "Sha Sha" gave birth to a cub at Harbin Polarland. (Xinhua/Wang Jianwei)
Photo taken on Feb. 13, 2019 shows a seal cub at Harbin Polarland in northeast China's Heilongjiang Province. Seal "Sha Sha" gave birth to a cub at Harbin Polarland. (Xinhua/Wang Jianwei)
Photo taken on Feb. 13, 2019 shows a seal cub and its mother at Harbin Polarland in northeast China's Heilongjiang Province. Seal "Sha Sha" gave birth to a cub at Harbin Polarland. (Xinhua/Wang Jianwei)