Giant Robot vs Sea Monster Cinematic Video

A combat robot hundreds of meters tall standing in the sea, with everything below its thighs underwater. The scene is at night with heavy rain. Five helicopters with searchlights are flying in circles around this huge robot, searching for unidentified objects underwater. The sea surface is surging with waves and strong winds. Suddenly, in an instant, a very large dinosaur-like aquatic creature emerges from under the sea and knocks down the robot with one palm strike.