Vs plesiosaur

The creature had given up trying to haul Kong down. It threw its entire sinuous length out of the pool and wrapped itself around Kong, like a gargantuan constricting snake. Driscoll, hunkered behind his rock, could see no advantage to either side for long moments. The thing from the pool looped its coils around Kong’s chest, tried to ensnare his neck. For his part, Kong fought to bring his teeth to bear on those coils, tore at the monster’s flesh with his hands, and struggled in a terrible silence. He gave no more challenging roars, but Driscoll could hear the rush of Kong’s breath as the monster tried to squeeze the life from him.
Then, suddenly, Kong changed his stance, widening his stride, bending his knees and dropping lower. The move took the creature from the pool by surprise, and it reared its head. Immediately Kong seized that elusive target with both hands. His shoulders knotted with effort, and Driscoll winced as the beast-king crushed the skull. The creature writhed in agony, lost its hold, and its coils thrashed, loosening their clutch on Kong. Kong held the beast’s neck in one hand and used the other to peel away the constricting length of the monster. The beast fell into a pulsating mound at Kong’s feet, and as if in contempt, Kong threw the smashed head to the top of the pile.


Merian C. Cooper's King Kong, Chapter 17