ナショナルジオグラフィックさんのインスタグラム写真 - (ナショナルジオグラフィックInstagram)「Photo by @brianskerry | A newborn humpback whale calf swims just beneath the surface of the water off of Tonga in the South Pacific. Humpbacks migrate to these warm waters in winter from their summer feeding grounds in Antarctica. While in these warmer waters, females give birth following a nearly year-long gestation period. For the first year of its life, the calf will learn everything necessary to survive from its mother. Follow@BrianSkerry for more images of whales and other marine wildlife. #humpbackwhales #tonga #whaleculture #planetofthewhales #smartanimals」4月11日 0時03分