The video shows a large sea turtle swimming in the ocean. The turtle is moving slowly and gracefully through the water, with its flippers gently propelling it forward. The ocean is a deep blue color, and the sunlight is shining through the water, creating a beautiful and serene atmosphere. The turtle's shell is a dark green color, and it has a long, curved neck that it uses to navigate through the water. The turtle appears to be alone in the water, with no other sea creatures visible in the video.