At www.dailygalaxy.com/my_weblog/2016/11/mysterious-pinging-sound-detected-… … wildlife has disappeared – such as bowhead whales, bearded and ringed seals etc. Instead, a strange noise has been heard coming from the sea floor. What is going on?
See also www.theguardian.com/world/2016/nov/03/canada-forces-investigate-mysterio… … and then there is the 'hum' – something that is more common in other parts of the world – see for instance www.livescience.com/38427-the-hum-mystery-taos-hum.html