The video shows a close-up of a fish tank with several jellyfish decorations. The jellyfish are white with blue spots and have long, thin tentacles. They are floating in the water, moving gently back and forth. The tank also has colorful coral and rocks, creating a vibrant underwater scene. The water is clear, and bubbles can be seen rising to the surface. The jellyfish are the main focus of the video, and their movements are the only action taking place.