ナショナルジオグラフィックのインスタグラム(natgeo) - 2月7日 20時39分

Photo by @katieorlinsky / A family of female sperm whales in the Caribbean Sea, off the coast of Dominica. Sperm whales are matrilineal, with female family members living together in pods for life, helping raise and even nurse one another’s babies. These incredible creatures also have the largest brains of any animal, and a large part of their brain is devoted to things like emotion, social interaction, and language. They have dialects and even accents depending on their geographic location, region, and family group. For most of the 20th century, tens of thousands of sperm whales were killed every year by commercial whalers. Their numbers have rebounded substantially since the 1982 whaling moratorium, but their population is still under serious threat from noise pollution, plastics, freight ships, and a variety of other polluting factors. If our relationship with the ocean continues on its current path, there may be very few sperm whales left by 2030. While it may not feel like much, we can help these amazing creatures by avoiding single-use plastics and supporting environmental policies that promote clean energy.

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