The video shows a person holding a sea creature in their hand. The creature is brown and has a rough texture. The person then places the creature into a tank of water, where it begins to move around. The creature has a long, slender body and appears to be a type of sea slug or similar marine animal. The tank is clear, allowing for a good view of the creature as it swims around. The person's hand is visible in the video, indicating that they are the one holding and placing the creature into the water. The video does not contain any other objects or people, and the focus is solely on the creature and its movements.