The video shows a dark underwater scene with a large school of fish swimming in a circular pattern. The fish are illuminated by a light source that appears to be coming from above, creating a beautiful and mesmerizing effect. The fish move in unison, creating a sense of harmony and unity. The light source casts a greenish hue on the scene, adding to the overall ambiance. The video captures the natural beauty and grace of the fish as they move through the water.