The video shows a person scuba diving in the ocean, holding a yellow box with a camera attached to it. A robotic fish is swimming nearby, and the person appears to be filming it. The water is clear and blue, and the person is wearing a black wetsuit and a blue snorkel. The robotic fish is white and has a streamlined shape, resembling a real fish. The person seems to be controlling the robotic fish with the camera, possibly for research or filming purposes.