The video shows a shark swimming in the dark ocean water. The shark is illuminated by a light source, possibly a flashlight, held by the person filming. The shark's movements are slow and steady as it navigates through the water. The ocean is otherwise dark, with only a few small bubbles visible around the shark. The shark's body is elongated, with a pointed snout and a long tail. The light source casts a bright reflection on the shark's body, highlighting its features and movements.