In the video, a man is seen swimming underwater with a large sea animal. The animal appears to be a sea lion, and it is swimming around the man, occasionally coming close to him. The man is wearing a blue wetsuit and is holding a camera, presumably to capture the experience. The water is clear, and the sea lion's movements are graceful and effortless. The man seems to be enjoying the interaction with the sea lion, and the animal appears to be curious about the man. The video captures the beauty of the underwater world and the fascinating interaction between humans and marine life.