This film was taken on the banks of the Yangtze River in Yichang, China.
According to an unnamed eyewitness, something very large, black, and with a long tail coiled in the water near the coast. Douyin, a Chinese video provider, was the first to share the footage.
A hump ledge was evident on the back of a snake-like creature, according to the Daily Star.
The video has gone viral, with millions of people watching it. Users have hypothesized what it is, but no one has reached a conclusion.
Local forestry sector representatives have yet to respond to the submission.