The video shows a large octopus sitting on a rock in the middle of a coral reef. The octopus is surrounded by a variety of colorful fish swimming around it. The octopus is mostly white with some brown spots on its skin. The fish are bright orange and red, and they swim in and out of the frame. The coral reef is made up of various types of coral, including some that are purple and others that are brown. The water is clear and blue, and the sunlight is shining through, creating a beautiful underwater scene.