00:43 Bloody Fish Gore Spilling into Waters Off British Columbia A pipe is spilling blood and scales of farmed atlantic salmon into the waters off the coast of British Columbia, Canada. Conservationists are worried it will affect the wild salmon population there.

At a Glance In 2017, Tavish Campbell first discovered blood and other waste coming from the pipe.

Testing showed the discharge contained piscine orthoreovirus.

Scientists say the virus comes from farmed salmon and it endangers threatened wild salmon.

Two years after revealing that a pipe was spewing infected blood and other fish remains into the waters off Vancouver Island, photographer Tavish Campbell says the practice is continuing.

The pipe empties into Brown's Bay on the northeast side of the island in British Columbia, Canada. The waters between Vancouver Island and Canada's Discovery Islands are home to one of the largest migratory routes for wild salmon.

The pipe is connected to Brown’s Bay Packing Co., which has processed farmed Atlantic salmon since 1989 , according to CCTV.

When Campbell discovered the pipe in 2017, he collected samples of the blood that he had tested at the Atlantic Veterinary College in Prince Edward Island. The scientists there found the samples contained piscine orthoreovirus, or PRV.

Campbell said genetic testing revealed the virus came from the Atlantic Ocean and was most likely imported via salmon eggs by the fish farm industry.

(MORE: Global Greenhouse Gas Emissions Projected to Set Another Record This Year)

Some scientists say PRV, which is highly contagious in fish, isn't a threat to wild salmon. Other studies have linked it to potentially fatal heart and skeletal muscle inflammation, CCTV reported.

The first video and testing led to an audit of fish processing plants by the B.C. Ministry of Environment and Climate Change Strategy. The audit found that more than 70% of plants audited were out of compliance with environmental regulations, and some were operating under decades-old rules, the Seattle Times reported.

<img class="styles__noscript__2rw2y" src="https://s.w-x.co/util/image/w/salmonblood2.jpg?v=at&w=485&h=273" srcset="https://s.w-x.co/util/image/w/salmonblood2.jpg?v=at&w=485&h=273 400w, https://s.w-x.co/util/image/w/salmonblood2.jpg?v=ap&w=980&h=551 800w" > Photographer Tavish Campbell four times visited the site where effluent flows from a discharge pipe into Brown's Bay in British Columbia. (Courtesy of Tavish Campbell)

Campbell, an underwater videographer and conservationist, said Canadian Prime Minister Justin Trudeau's Liberal Party had promised to solve the discharge problem by transitioning fish farms out of the ocean and onto land by 2025. Campbell returned to Brown's Bay four times in October and November.

"It was a sinking feeling to see the blood still pouring out ," he told Vice's Motherboard site. "The disappointment was quickly replaced with fear for the health of our wild salmon and by extension, the whole British Columbia coast."

Brown’s Bay Packing Managing Partner Dave Stover posted a response to the latest video on the company's website saying the plant was part of the Environment Ministry's audit.

“Upon [the audit's] conclusion, a completely revamped wastewater treatment permit was issued to us by the Ministry of Environment. Our new permit contains the strictest water quality testing parameters and ongoing monitoring requirements for fish processing effluent on the coast of B.C. We fully support the strict and responsible standards,” Stover wrote.

(MORE: Climate Change Makes Food Scarce for Santa's Reindeer)

He told CTV News the company is in the final stages of commissioning a $1.5-million water treatment system.

“The disinfection component of the system which is the final stage of the process is designed to disinfect the effluent,” Stover said. “Although we don’t test for PRV, we are confident the disinfection process kills bacteria and virus.”

Wild salmon stocks are being devastated by climate change. And 2019 has been another discouraging year. Canada's Department of Fisheries and Oceans had projected nearly a million Fraser River sockeye would return this year. The number was actually just a little more than 600,000 , CBC reported.

In a statement, Campbell pointed out that these near extinct salmon swim through the effluent of the processing plant and fish farms twice on their migration to and from the Pacific Ocean.

"2019 was the worst sockeye salmon return in Canadian history," Campbell told Motherboard. "This is what extinction looks like and it's happening right under our noses."