The video features a computer-generated image of a plesiosaur, a prehistoric marine reptile. The plesiosaur is shown swimming in a side profile view against a black background. The creature has a long neck, a small head, and a long tail. The plesiosaur's skin is textured and colored in shades of gray. As the video progresses, text appears at the bottom of the screen indicating the plesiosaur's length as "39 feet" and then "6.4 feet." The text is white with a black outline for visibility.