The video captures a single jellyfish as it moves through the water. The jellyfish has a white, translucent body with long, flowing tentacles trailing behind it. The background is a deep blue color, providing a stark contrast to the jellyfish's pale hue. The jellyfish appears to be floating effortlessly, with its tentacles undulating gently in the water. There are no other objects or creatures visible in the video, and the jellyfish is the sole focus.