The video captures a serene underwater scene with a group of salmon swimming in a river. The salmon are seen swimming around the rocks and pebbles on the riverbed, with their bodies moving gracefully through the water. The riverbed is covered in various sizes of rocks and pebbles, creating a natural habitat for the salmon. The water is clear, allowing for a detailed view of the salmon and their surroundings. The salmon are predominantly red with some white and black markings, and their movements are smooth and coordinated. The video provides a close-up view of the salmon, highlighting their size and the intricate details of their scales and fins. The overall atmosphere of the video is peaceful and calming, with the gentle flow of the water and the serene movements of the salmon.