Two white whales blow heart-shaped bubbles in the water at the Harbin Polarland in Harbin, capital of northeast China's Heilongjiang Province, Feb. 2, 2010. The white whales in the Polarland gained the skills as a new year gift for visitors after one-year of training. (Xinhua/Wang Jianwei)

A white whale blows a bubble in the water at the Harbin Polarland in Harbin, capital of northeast China's Heilongjiang Province, Feb. 2, 2010. The white whales in the Polarland gained the skills as a new year gift for visitors after one-year of training. (Xinhua/Wang Jianwei)

A white whale blows a heart-shaped bubble in the water at the Harbin Polarland in Harbin, capital of northeast China's Heilongjiang Province, Feb. 2, 2010. The white whales in the Polarland gained the skills as a new year gift for visitors after one-year of training. (Xinhua/Wang Jianwei)