Shark caught on camera for first time in Antarctica's near-freezing deep

An ungainly barrel of a shark cruising languidly over a barren seabed far too deep for the sun's rays to illuminate was an unexpected sight.

Many experts had thought sharks didn't exist in the frigid waters of Antarctica before this sleeper shark lumbered warily and briefly into the spotlight of a video camera, researcher Alan Jamieson said this week. The shark, filmed in January 2025, was a substantial specimen with an estimated length of between 3 and 4 metres (10 and 13 feet).

"We went down there not expecting to see sharks because there's a general rule of thumb that you don't get sharks in Antarctica," Jamieson said.

"And it's not even a little one either. It's a hunk of a shark. These things are tanks," he added.

The camera operated by the Minderoo-UWA Deep-Sea Research Centre, which investigates life in the deepest parts of the world's oceans, was positioned off the South Shetland Islands near the Antarctic Peninsula. That is well inside the boundaries of the Antarctic Ocean, also known as the Southern Ocean, which is defined as below the 60-degree south latitude line.

The centre on Wednesday gave The Associated Press permission to publish the images.

The shark was 490 metres deep where the water temperature was a near-freezing 1.27 degrees Celsius.

A skate appears in frame motionless on the seabed and seemingly unperturbed by the passing shark. The skate, a shark relative that looks like a stingray, was no surprise since scientists already knew their range extended that far south.

Jamieson, who is the founding director of the University of Western Australia-based research centre, said he could find no record of another shark found in the Antarctic Ocean.

Peter Kyne, a Charles Darwin University conservation biologist independent of the research centre, agreed that a shark had never before been recorded so far south.

Climate change and warming oceans could potentially be driving sharks to the Southern Hemisphere's colder waters, but there was limited data on range changes near Antarctica because of the region's remoteness, Kyne said.

The slow-moving sleeper sharks could have long been in Antarctica without anyone noticing, he said.

"This is great. The shark was in the right place, the camera was in the right place and they got this great footage," Kyne said. "It's quite significant."

The sleeper shark population in the Antarctic Ocean was likely sparse and difficult for humans to detect, Jamieson said.