The video shows a large whale swimming in the ocean. The whale's body is mostly submerged, but its tail fin is visible above the water's surface. The whale's skin is a dark gray color, and it moves smoothly through the water, creating ripples and waves. The ocean is a deep blue color, and the sunlight reflects off the water's surface. The whale's tail fin is white and appears to be quite large in comparison to the rest of its body.