The video shows a large shark swimming in the ocean near a rocky reef. The shark is grey in color and has a streamlined body shape. It moves smoothly through the water, occasionally turning its head to look around. The reef is covered in various types of coral and marine plants, creating a colorful and diverse underwater landscape. Small fish can be seen swimming around the reef, adding to the bustling marine life. The water is clear, allowing for a good view of the shark and its surroundings.