The video shows a large, long-necked dinosaur swimming in the ocean. The dinosaur has a long neck and tail, and its body is covered in scales. It moves gracefully through the water, with its head and tail visible above the surface. The ocean is a deep blue color, and the sunlight filters through the water, creating a serene and peaceful atmosphere. The dinosaur's movements are slow and deliberate, and it appears to be enjoying its time in the water.