An angler was left stunned when he reeled in a big fish that was growing around a discarded plastic drink ring.
Adam Turnbull pulled the northern pike out of the water and cut off the sports drink ring which had ended up in the river.
The avid fisherman snapped a few photos of the bizarre sight and shared them online as he urged people to stop littering.
His Facebook photos revealed the shocking damage that the ring had done as it constricted the pike's mid-section.
The images have gone viral and sparked an angry response, with more than 11,000 shares.
Adam caught the fish in the Saskatchewan River, in the Canadian province of Alberta, on Saturday.
He initially thought the fish had been bitten or partially eaten by a predator.
But he was shocked when he discovered the plastic ring around it.
He wrote on Facebook: "Pick up your garbage. This is a Powerade wrapper which takes up no room in your pocket until you get to a garbage can. Please share!"
After cutting off the plastic ring, Adam, who works at Fish Big World in Strathmore, Alberta, and hails from Sarnia, Ontario, released the fish back into the river.
In response to the photos, angry social media users condemned people who litter or pollute waterways.
A Facebook user called Nathan wrote: "Disgusting. People are so selfish it’s saddening.
"I’m sure if the person that dropped this new [sic] the fate of it then I like to think they wouldn’t of dropped it but what we need are people with the sense to know the possible outcomes without going through them."
Another user, Kelly, added: "So sad that some people are just to lazy to use a garbage can. So many garbage cans & recycle bins in plain sight but not used by many."
And Paul added: "Hard to believe it could survive in that condition! Fish are pretty resilient though, you see some with huge scars that look like they almost got bit in half by a bigger fish.
"We sure don't make it any easier on them by throwing trash on the ground or in the lake!!!"
Last week, a diver's shocking photos revealed a "sea of plastic" filled with takeaway containers and carrier bags in the Caribbean.