In the video, a large school of small fish is swimming in the ocean. A shark is swimming behind them, and it opens its mouth wide to catch the fish. The shark's sharp teeth are visible as it moves through the water. The fish are swimming in a tight formation, trying to avoid the shark. The water is clear, and the sunlight is shining through, creating a beautiful underwater scene. The shark is the main focus of the video, and its movements are slow and deliberate as it tries to catch its prey.