Video prompt: A surfer catches a wave just before sunset. He rides the crest with grace, water splashing as the wave breaks. He wears a black wetsuit, and his surfboard is bright yellow. The sun dips low on the horizon, painting the sky with soft gold and lavender tones.
Defect: Appearance (for things that should not appear)
Explanation:  The additional arm appears unexpectedly, creating an unrealistic effect in the scene.