The video shows a person swimming underwater with a spear gun in hand. The person is moving slowly through the water, surrounded by coral reefs and fish. The water is clear and the visibility is good, allowing the viewer to see the details of the underwater environment. The person appears to be hunting for fish, as they are holding the spear gun and looking around. The coral reefs are colorful and diverse, with various types of fish swimming around them. The person seems to be experienced in underwater hunting, as they move with ease and confidence.