A golden retriever dog is swimming underwater, in the center of the image. It is in a dynamic, playful pose, its mouth open in a happy expression, and it appears to be chasing a tennis ball. The dog is facing the camera, looking directly at the viewer. The perspective is from slightly below the water’s surface, showing the water’s texture and bubbles around the dog. The water is a rich teal and dark blue, with highlights and reflections showing the light source. The dog’s fur is a light golden color, and the tennis ball is bright yellow. The overall atmosphere is cheerful and energetic, depicting a joyful underwater scene. There are visible waves and ripples in the water around the dog and ball.