Video prompt: Ocean tides pull back from a rocky beach, leaving tide pools filled with diverse marine life, starfish clinging to rocks, and tiny crabs darting across the sand.
Defect: Deformation (any reason involved with a movement)
Explanation: The crab's movement trajectory appears strange, as it does not follow the typical sideways motion expected of crabs. Additionally, its legs exhibit irregular, chaotic movements, becoming blurry and indistinct during its motion.