Video Shows Man Holding Huge Bull Shark Before Releasing It Into Harbor

The moment a fisherman tried to release an 8-foot bull shark in a harbor after he and a friend reeled it in has been caught on video.

The bull shark had been lurking in the harbor in the Birchgrove area of Sydney, Australia, before the men caught it.

Sydney Harbor is teeming with bull sharks at this time of year. They prefer shallow coastal waters, like those found in this area, and are attracted by the warm temperatures during summer and autumn. Once the water cools down in the winter, they usually leave the harbor and migrate north.

Fisherman Hassan Alameri, who filmed the video, told Storyful he caught the shark by using his kayak to paddle out bait into the main channel of the harbor, where the sharks usually lurk. He said he regularly captures bull sharks every year in January.

Alameri is a recreational fisherman who releases all his catches.

The video shows the shark in shallow water, seeming placid at first.

As one of the men attempts to pull the shark back into deep water, it begins thrashing around. The fisherman then steps cautiously away.

Alameri attempts to open the shark's mouth with his hand. "He's just solid, bro," he says.

Alameri's friend then takes hold of the shark's tail and tries once again to carefully direct it back into the water. The shark continues to thrash about. Alameri says: "Whichever way he's going get out the way!"

The shark manages to turn itself around, in the direction of the water

"That's too scary," Alameri's friend says as he unsuccessfully tries to position the shark towards the water. The fisherman continues to guide its tail backward, further pushing it in the direction of the water. The shark then successfully swims away.

Andrew Chin, senior researcher at the fish and fisheries lab at James Cook University, told Newsweek that bull sharks are regularly found up and down the Australian coast.

"Handling large sharks is not easy...[the fishermen] did the best they could under the circumstances....They left it in the water and released it which are good... bull sharks are pretty tough and it swam off vigorously which suggests that it was OK, but as for the long term, we just don't know," Chin said.

Bull sharks are considered one of the most dangerous shark species to humans because of their aggressive tendencies. As they prefer shallow coastal waters, it means they often come into conflict with humans. They have been known to attack people inadvertently or out of curiosity, however, attacks are rare.

Alameri told The Daily Telegraph that the 8ft bull shark was the third-largest he's caught. On average, bull sharks are 7ft long.

He said: "It's such an adrenaline rush seeing such a big creature come out, it's quite the fight too, I wasn't quite ready for it.

"You can see in the video that the shark is always in the water, it always has water running over its gills, it was on the bank for a maximum two to three minutes. It's important not to play around with these animals," he said.

Sharks are fish, which means they require water to cover their gills in order to collect oxygen and breathe.

This article has been updated to include quotes from Andrew Chin.

Bull shark
A stock photo shows a bull shark, which is thought to be one of the most aggressive shark species. FionaAyerst/Getty Images