Aquaman lifts a full-sized submarine to the surface of the ocean. Gains entry and gets into a fight with some guy. They knock each other around.
I’m thinking: OK, a multi-thousand ton lift . . . followed by, you would think: one punch.
Maybe he was exhausted from the lift.
It has to be the water, like when Jack LaLanne towed by swimming, 70 boats on his seventieth bday :^)