ナショナルジオグラフィックのインスタグラム(natgeo) - 5月7日 21時34分

Photo by Cristina Mittermeier @Cristina Mittermeier | In the darkness of the ocean's depths, sperm whales use echolocation to communicate with one another and to find their way. I took this photo off the coast of the island of Dominica, and I'd like to draw your attention to the scars on this sperm whale's head. This is what happens when whales become curious of boats. This friendly sperm whale probably stuck its nose (or its melon, as it's actually called) too close to the propeller of a boat and got hit. Although they are incredibly smart and sensitive to sound, they are not savvy when it comes to boat traffic. The mechanical roar of motors in the water wreaks havoc on their echolocation, disrupting the whale's sense of space and distance. #FollowMe at @Cristina Mittermeier and explore my feed for more photos of whales. #Dominica #ocean #conservation #campaignfornature

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• Cristina Mittermeier