Video prompt: On a peaceful river, a couple paddles a canoe, their oars slicing through the water. Reflections of lush trees ripple alongside them as they drift past, surrounded by the sounds of rustling leaves and chattering wildlife.
Defect: Deformation (any reason involved with a movement)
Explanation: The oar distorts unnaturally, twisting and changing shape as it moves during rowing, which is unrealistic. The oar should maintain a stable, rigid structure throughout the motion.