A dolphin casually watched on as New Zealand's first man and expectant father Clarke Gayford was approached by a shark.
Mr Gayford posted an image to Twitter showing him engaging a bronze whaler shark in combat as the dolphin took a back seat to observe the action.
"So it turns out that not only do dolphins do not help, they actually quite like watching," he wrote.
"A childhood myth is ruined."
So it turns out that not only do Dolphins not help, they actually quite like watching.— Clarke Gayford (@NZClarke) May 16, 2018
A childhood myth is ruined. pic.twitter.com/yWZPeD9fGJ
In spite of popular belief, and a touching episode of Flipper, there is no evidence to suggest dolphins "protect" humans from sharks in the water.
Sharks and dolphins are often found in the same area because they eat the same food and have been observed swimming together.