The video shows a large manatee swimming in clear blue water. The manatee is seen eating green vegetation from the ocean floor. There are several small fish swimming around the manatee, and the water is calm and clear. The manatee's skin is wrinkled and grayish in color, and it moves slowly through the water. The fish are small and brown, and they swim in a group around the manatee. The ocean floor is visible and appears to be sandy with some rocks and plants.