Narwhal sea unicorns are almost as mysterious as their mythical counterparts. One of the secrets of the life of these animals was revealed by a group of geophysicists from the University of Hokkaido, led by Yevgeny Podolsky, who, together with Inuit hunters, went to record the sounds made by narwhals in the Greenland Fjord.
True, the main research of the Podolsky group was devoted to the sounds of glaciers, next to which narwhals live. According to Evgeny: "I realized that it is a big mistake to conduct research in these places and not pay attention to the endemic Arctic unicorn swimming next to us."
Narwhals use whistling for intraspecific communication, navigation and hunting. As the animal approaches the source of food, the frequency of its sounds increases, turning into a buzzing, reminiscent of a working chainsaw. These signals help narwhals pinpoint the location of their prey.
The acoustic information generated by narwhals gives scientists new insights into their feeding behavior.