The video shows a close-up of a jellyfish in a tank. The jellyfish is mostly white in color, with a clear, round, and shiny head that is attached to a long, thin, and white tentacle. The jellyfish is moving slowly and gracefully in the water, with its tentacle trailing behind it. The background is dark, which contrasts with the jellyfish's light color, making it stand out. There is no visible title, subtitle, or text in the video.