Headless sea lions are washing up on Vancouver Island and some believe people are to blame

Deborah Short was on social media in March when she came across gruesome photos appearing to showdecapitated sea lions along the shores of eastern Vancouver Island.

Then in April, while out for a walk with her dog in Neck Point Park, north of her Nanaimo, B.C., home, she said she witnessed in person what she had seen online.

"Clearly, the [body] had been decapitated," Short said.

"Not only was I horrified, I was angry. It was beyond me how anybody could possibly harm such beautiful creatures," she said.

It wouldn't be the lasttime she came across a headless sea lion. She said she found another while out for a walk on June 10,along with a seal that had been skinned nearby.

Marine mammal zoologist Anna Hallwith Seaview Marine Sciences says she is aware of headless sea lions washing up on the coast between Nanaimo and Campbell River, around150kilometres northwest.

"From what I can tell from the photos I've seen, these are Stellersea lions, which are a species at risk in Canada," said Hall.

Steller sea lions' natural predators include transient killer whales and sharks. But Hall says the decapitations are unlikely to be caused by another animal.

"It seems more likely that it is human caused," Hall said.

It's not the first time marine mammalshave been foundwashed up on Canadian shores without their heads.

In 2013, four headless sea lions were found on Vancouver Island beaches. In 2014, at least 12 headless seal carcasses were found on the banks of the St. Lawrence in Quebec.

Marine mammals in Canada are protected from injury or harm by the Fisheries Act and the Species at Risk Act. Steller sea lions have a "special concern" status within the Species at Risk Act.

The sea lions play an integral role within the Salish Sea ecosystem as one of the main sources of prey for transient killer whales.

"Its really important to think of the big picture in terms of the recovery of our local waters because they have sustained some pretty significant human pressures over the past 200 years," said Hall.

Jordan Reichert, director with the non-profit Animal Alliance Canada, has reached out to Fisheries and Oceans Canada (DFO) in relation to the sea lions found without their heads.

"I've been asking them to look into the issue more because it's of grave concern. This isn't a new issue," said Reichart.

DFO'aware' of photos

On Monday the DFO said it has seen a "slight increase" in reports of dead sea lions washing up on the shores of Vancouver Island, but notedit is "a fairly common occurrence."

"Typically, the animals are washed up intact.However, from time to time individuals may tamper with the animals once beached. If this is determined to have been done in an effort to knowingly tamper with evidence, this would be an offence under the Criminal Code of Canada," read a statement emailed to CBC News.

"DFO's Conservation and Protection Branch are aware of pinniped-related social media activities and are monitoring these closely."

Reichartsaid he wants to see DFO catch the poachers responsible, and carry out more patrols on the water so that potential poachers are aware the areas are being protected from marine life abuse.

It's a sentiment echoed by Deborah Short.

"I'm heartbroken. I'm devastated by it," she said."And I want to see stronger laws for protection of our seals and sea lions along our coast."