The video shows a jellyfish swimming in the water. The jellyfish has a long, thin body with a bell-shaped top and a fringe of tentacles along its sides. The water is a greenish color, and the jellyfish is the only visible creature in the frame. The jellyfish moves slowly and gracefully, with its tentacles trailing behind it. There are no other objects or creatures in the video, and the focus is solely on the jellyfish and its movements.