Scientists were able to capture rare audio of narwhal vocalizations as several swam through a fjord in Greenland, and they discovered that these elusive whales make some familiar sounds underwater.
Known as the unicorns of the sea, narwhals live in the Arctic waters. Evgeny Podolskiy of Japan's Hokkaido University, who studies the sounds of glaciers, realized that to get a fuller picture, he needed to understand what noises the narwhal makes. Last summer, he led a team of geophysicists to Greenland, where they worked with Inuit hunters to record the different noises of the narwhal. Their study was published Tuesday in the AGU's Journal of Geophysical Research: Oceans.
The team was able to capture narwhals whistling, clicking, and buzzing. Narwhals use echolocation to find food, and the researchers found that the closer a narwhal gets to its prey, the faster it clicks, and the buzzing noise sounds like a chainsaw. When narwhals want to communicate with each other, they whistle. The researchers said the recordings have helped them better understand narwhal behavior and how they find food in the summer.
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