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 sperm whale, with squid arms and tentacles in its mouth, feeds in the waters off Dominica in the eastern Caribbean. These whales find squid here in depths of about 600 meters, surfacing only briefly between dives while in foraging mode. These animals have complex cultures within their families that include specialized dialects, parenting techniques, and more.//To get an up-close look at animals that survive our planet's most extreme environments, watch #HostilePlanet on @natgeochannel tonight at 9/8c.//」4月2日 0時02分