The video depicts a medium-sized, brown rodent swimming in a narrow waterway. The rodent appears to be a muskrat or nutria, with a visible tail trailing behind it in the water. The water is murky and brown, with some visible green plants and grasses floating near the surface. The banks of the waterway are lined with rocks and vegetation. The rodent swims from left to right, moving through the water with ease. The overall scene suggests a natural or semi-natural environment, possibly a stream or canal in a park or wildlife area.