This video appears to be a cartoon animation set underwater. The main focus is on a large red squid with a friendly face, who is waving at the camera. There are also several small fish swimming around, including a yellow fish, a blue fish, and a pink fish. In the background, there is a green submarine with a yellow light on top. The water is a light blue color, and there are bubbles rising to the surface. The animation is colorful and playful, with the squid and fish moving gently in the water.