The video shows a close-up of a jellyfish in the water. The jellyfish has a long, thin body that is semi-transparent and has a pinkish hue. It is surrounded by small, white particles that are floating around it. The jellyfish appears to be moving slowly, with its body undulating in a rhythmic manner. The background is dark, which contrasts with the jellyfish and the particles, making them stand out. There is no visible title, subtitle, or other text in the video.