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 female sperm whale calf swims just beneath the ocean surface in the eastern Caribbean. With sperm whales, males leave the family unit in their teen years, and females remain, guiding the family. This calf was born to a family that for years had struggled to produce female calves. When Shane Gero and I discovered this little calf, we were overjoyed—it meant there was hope for the future. Shane has studied these families for nearly two decades, and with his blessing, I named this calf Hope. #whales #whaleculture #spermwhales #caribbean」7月11日 11時34分