The video shows a shallow body of water, likely the ocean, with a sandy bottom visible through the clear water. Gentle waves are breaking on the shore. In the middle of the frame, a dark, elongated shape is visible swimming just below the surface of the water. It appears to be a fish, possibly a shark due to its shape. The water transitions from a very clear, light green near the shore to a deeper, darker green further out. The overall scene depicts a serene beach environment with aquatic life.