The video shows a large sea snake swimming through the ocean. The snake's body is long and slender, with a smooth texture. It moves gracefully through the water, undulating its body in a wave-like motion. The ocean floor is sandy and scattered with rocks and coral formations. The water is clear, and the sunlight filters through, casting a blue-green hue over the scene. The snake's scales reflect the light, giving it a shimmering appearance. There are no other sea creatures visible in the video, and the snake appears to be the only living creature in the frame.