A photo captured by Tim Samuel literally gives us a picture of what it's like to be trapped inside a jellyfish's body. And somehow, it seems to look like either instant regret or joy.

The Australian photographer was snorkeling with his friend, videographer Franny Plumridge, in Byron Bay, a protected marine park, when he came across the surprising scene.

"There were no other fish in sight," he told CNN by phone. "I just stumbled upon it."

According to CNN, Samuel followed the jellyfish for almost 30 minutes, before he was able to take photos of the unusual sight. Based on his observation, he swore the fish was alive and was actually trying to control the movement of the jelly fish.

In an interview with CNET, he said: "It seemed completely trapped in there, like it had somehow managed to swim inside and then was unable to back itself out."

"The fish was able to propel the jellyfish forward and controlled its movement to an extent. The jellyfish threw it off-balance though, and they would wobble around, and sometimes get stuck doing circles."

While he swore he badly wanted to free the poor fish, Samuel said he just went on and let nature decide for itself.

He posted some of the shots on various social media platforms, and it immediately went viral.

Meanwhile, Associate Professor Ian Tibbetts, a fish biologist at the Centre for Marine Science at the University of Queensland told Australian Geographic that the fish looks like it could be a juvenile trevally.

"It's difficult to tell whether disaster has just struck, or whether the fish is happy to be in there," said Tibbetts.

"Although by the photographer's description of the fish swimming, my guess is that it is probably quite happy to be protected in there," he added.

Juvenile trevally usually intentionally seek protection among jellyfish, as it provides them with protection from predation from other fish.