The video shows a large fish swimming in the ocean. The fish is dark in color and has a streamlined body shape. It is surrounded by small fish that are swimming in the background. The water is a deep blue color, and the lighting is dim, creating a serene underwater atmosphere. The large fish moves slowly and gracefully through the water, its fins and tail gently propelling it forward. The small fish in the background appear to be swimming in a coordinated group, their bodies reflecting the light as they move. The video captures the beauty and tranquility of underwater life, with the large fish as the main focus.