"I found it on a beach while walking my dog," he told Reddit users.
The video shows the snake being prodded several times and initially reacting to the direction of where the tennis racquet was pushed before trying to move in the opposite direction.
Jako Noble wrote that he believed the head was eaten by a bird and then dropped on the beach.
"It would have been eaten and dropped on the beach by a bird," he said.
"I reckon it was a bird that did it. They will often come up for air and be on the surface for a while. There are also a few birds of prey in the area."
However, another user suggested it may have been hit over the head with a shovel before Jako Noble came across it.
"Wouldn't be surprise at that. I think the only saving grace is there was a small chunk taken out of its side too, as if something had eaten a bit," Jako Noble wrote.