The bizarre 'pinging' sound that can be heard from the sea in Northern Canada - but no one knows where it's coming from

The 'pinging' sound can be heard in Fury and Hecla Strait in Nunavut
Hunters are concerned as the noise is scaring away animals
Theories of the source include deep sea mining, and ploys by Greenpeace to protect animals in the area

Published: 07:19 EDT, 4 November 2016 | Updated: 09:25 EDT, 5 November 2016

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In the remote community of Nunavut in Northern Canada, hunters are concerned about a mysterious sound that appears to derive from the sea floor.

The pinging sound could be heard in the region throughout the summer, and has scared away several animals.

The source of the sound remains a mystery, with theories ranging from environmental activists to mining, but the Canadian military is now getting involved to work out the cause.

In the remote community of Nunavut in Northern Canada, hunters are concerned about a mysterious sound that appears to derive from the sea floor. Pictured is an Inuit fishing in the area

According to official memos, defence chiefs said submarines were not considered a likely source but had not been ruled out.

THE ORIGIN OF THE NOISE

The origin of the sound remains a mystery, though several theories have been suggested.

One theory suggests that Baffinland Iron Mines Corporation - a nearby mining company - is to blame.

In the past, the firm has performed sonar surveys of the Steensby Inlet in the area.

But the firm maintains that it is not currently conducting any surveys in Nunavut, and does not have any equipment in the water.

Other theories suggest that Greenpeace is making the noise deliberately to scare wildlife away from the hunting area.

Mr Quassa said: 'We've heard in the past of groups like Greenpeace putting in some kinds of sonars in the seabed to get the sea mammals out of the way so Inuit won't be able to hunt them.'

But Greenpeace denies the rumours.

The sound has been heard in Fury and Hecla Strait, around 75 miles (120 kilometres) northwest of the hamlet of Igloolik.

Speaking to CBC News, Paul Quassa, a member of the legislative assembly, said: 'That's one of the major hunting areas in the summer and winter.

'And this time around, this summer, there were hardly any. And this became a suspicious thing.'

George Qulaut, another member of the legislative assembly visited the site after hearing the reports.

While he did not hear the sounds himself, he did notice the decline in wildlife.

He said: 'That passage is a migratory route for bowhead whales, and also bearded seals and ringed seals. There would be so many in that particular area. This summer there was none.'

The origin of the sound remains a mystery, though several theories have been suggested.

One theory suggests that Baffinland Iron Mines Corporation - a nearby mining company - is to blame.

In the past, the firm has performed sonar surveys of the Steensby Inlet in the area.

But the company maintains that it is not currently conducting any surveys in Nunavut, and does not have any equipment in the water.

Other theories suggest that Greenpeace is making the noise deliberately to scare wildlife away from the hunting area.

Mr Quassa said: 'We've heard in the past of groups like Greenpeace putting in some kinds of sonars in the seabed to get the sea mammals out of the way so Inuit won't be able to hunt them.'

The passage is a migratory route for bowhead whales (pictured), and also bearded seals and ringed seals, but the noise could be scaring the animals away

But Greenpeace denies the rumours.

Farrah Khan, a spokeswoman for Greenpeace, said: 'Not only would we not do anything to harm marine life, but we very much respect the right of Inuit to hunt and would definitely not want to impact that in any way.'

The Canadian military is now looking into origin of the noise.

In a statement, a spokesperson for the Canadian Armed Forces, said: 'The Department of National Defence has been informed of the strange noises emanating in the Fury and Hecla Strait area, and the Canadian Armed Forces are taking the appropriate steps to actively investigate the situation.'