The video shows a scuba diver swimming underwater and encountering a large fish. The fish is seen swimming around the diver, who is wearing scuba gear. The water is clear, and the fish is the main focus of the video. The diver appears to be observing the fish and its movements. The fish is quite large and seems to be swimming calmly in its natural habitat. The video captures the beauty of the underwater world and the interaction between humans and marine life.