Mysterious "ping" heard in Arctic

Ships in the Arctic Ocean report that an odd pinging sound emanating from the bottom of the sea can be heard through their hulls. The Canadian military, fortified with Scooby snacks, is on the case.

From The Guardian:

Several reports were passed to the military, which sent a CP-140 Aurora patrol aircraft to investigate on Tuesday under the mandate of Operation Limpid, a domestic surveillance programme designed to detect, deter, prevent, pre-empt and defeat threats aimed at Canada or Canadian interests.

In a statement, Department of National Defence spokeswoman Ashley Lemire said: The Canadian armed forces are aware of allegations of unusual sounds emanating from the seabed in the Fury and Hecla Strait in Nunavut. The air crew performed various multi-sensor searches in the area, including an acoustic search for 1.5 hours, without detecting any acoustic anomalies. The crew did not detect any surface or subsurface contacts.