Prince Harry helped catch a saltwater crocodile during his tour of Australia last month.
The 30-year-old was pictured sitting on the 3.1-metre animal after it was removed from a trap in Darwin Harbour, ABC reports.
Northern Territory Parks and Wildlife released the photos and said Harry would make a "great croc catcher".
On its Facebook page, the Northern Territory Parks and Wildlife wrote: "No visit to the Northern Territory is complete without a crocodile experience, and a recent Royal visitor to the Top End was given the experience of a lifetime.
"Minister for Parks and Wildlife Bess Price said she was thrilled Prince Harry had found time in his busy schedule to assist the Crocodile Management Team in the removal of a large crocodile."
Mrs Price said: "Prince Harry went out on the croc boat and helped our rangers remove a 3.1m saltwater crocodile from a trap in Darwin Harbour.
"This top secret mission is sure to leave a unique lasting impression of the Territory with Prince Harry."
Wildlife Ranger Erin Britton said Prince Harry had no issues getting hands-on with the large crocodile.
"He'd make a great croc catcher. He responded to directions when catching the croc, helped pull it into the boat, and did a great job," she said.
"There's no doubt he enjoyed the experience, taking plenty of photos with a huge smile. He was very appreciative to the croc team for the opportunity to do something a bit different. He's a real sweetie.
"I was a little nervous at first when I was getting the snout rope on the croc, because Harry was observing so closely, but he was so easy going that I relaxed pretty quickly. It was a great experience."