The video features a single cuttlefish swimming in the ocean. The cuttlefish is dark in color with a large, fan-like fin on its back. It has two large, round eyes and several tentacles that are visible. The ocean water is a deep blue color, and there are small white particles floating around, possibly indicating the presence of plankton or other small marine life. The cuttlefish moves gracefully through the water, undulating its body and fin as it navigates its environment.