Canadian army investigates mysterious Arctic noise. Phys.org reports that the Canadian Army has been dispatched to investigate a strange beeping noise heard several times by Inuit hunters off the Fury and Hecla Straight. One theory was that the sound was made by marine mammals, because the strait is “usually frequented by narwhals, bowhead whales, ringed seals and bearded seals.” But the Inuit said that there were no animals left, as they all disappeared last year. What is known is that the noise is loud and “it comes from the bottom of the sea.” Although an initial investigation found no anomalies and the case was closed, the Canadian military decided to address Inuit concerns by sending two acoustic specialists to join a previously scheduled Canadian Rangers patrol to investigate further. And so the mystery noise remains a mystery, for now.