The video shows a close-up of an octopus swimming in the ocean. The octopus has a large head and eight tentacles, which it uses to navigate through the water. The octopus's skin is a dark color, and it has a suction cup on the end of each tentacle. The water around the octopus is clear, and there are small fish swimming in the background. The octopus moves slowly and gracefully through the water, showcasing its unique ability to change shape and color.