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 Brian Skerry @brianskerry | Portrait of a sperm whale in the waters off Dominica in the eastern Caribbean. These animals have complex cultures within their families that include specialized dialects, parenting techniques, and more. Sperm whale family units are matrilineal and are led by older, wise female whales. Follow @BrianSkerry for more images of whales and other marine wildlife. #whales #dominica #whaleculture #planetofthewhales #smartanimals」4月20日 2時32分