The video shows a person swimming underwater with a seal. The person is wearing a snorkel mask and a wetsuit, while the seal is swimming freely in the water. The seal appears to be comfortable around the person and is seen swimming close to them. The water is clear, and the sunlight is shining through, creating a beautiful underwater scene. The person and the seal seem to be enjoying each other's company, and the video captures the peaceful interaction between humans and marine life.