Numlock News: February 5, 2021 • Seals, Bill…

By Walt Hickey Have a great weekend! Loose Seals New research finds that seals in the Southern Ocean have significantly more nuanced ways of communicating than particularly understood, thanks to the installation of an audio and video livestream at McMurdo Station in 2017. Ultrasonic frequencies of over 200 kilohertz were observed among the pitches above the 20 kilohertz limit of human hearing. In the ‘70s, researchers caught the seals chit-chatting at 30 kilohertz, but the new equipment finds that the mammals spend a significant amount of time at the upper pitches, with

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