In the video, a person is seen swimming underwater in a lake. The person is wearing a black and white swimsuit and is surrounded by several fish. The water is clear and the bottom of the lake is visible, with rocks and plants. The person is swimming slowly, allowing the fish to swim around them. The fish are of different sizes and colors, and they seem to be curious about the person. The person is not interacting with the fish, but they are swimming close to each other. The overall atmosphere of the video is peaceful and serene.