The video shows a cartoon cat wearing a scuba mask and a blue backpack, swimming underwater. The cat is seen exploring the ocean floor, surrounded by seaweed and rocks. As it swims, a small red crab appears on a rock, looking at the cat. The cat continues to swim, and the crab remains on the rock, watching. The video is colorful, with the blue of the water contrasting with the green of the seaweed and the red of the crab. The cat's movements are smooth and graceful, while the crab's movements are more abrupt.