To answer that question: My guess is he fell into a body of water deep enough to splash w/o smacking against a stone floor.
Falling 984 feet into a body of water, having reached terminal velocity, at somewhere between 65-70 mph and who might as well be hitting concrete.
The GW Bridge is about 200 feet and the Golden Gate is roughly the same height.
People take nose dives off these bridge from time to time.
They’re not in too good a shape at all when the cops find them, if they do find them.