However, their swim was interrupted when two lifeguards on surfboards ordered Hill back to shore after he swam out too far, and subsequent reports suggested he had been involved in a dramatic rescue.
Hill has now spoken out to insist the drama was blown out of proportion.
He tells News.com.au, "I come to Australia and go for a swim at Tamarama. I look back and see Channing is like a mile behind me... he's really far away. Two guys on surfboards then come up to me and say, 'You shouldn't be out this far.' So I swim back to Channing and we get out of the water.
"The next day we hear, 'Oh, you had to be rescued by two guys yesterday.' This is like the worst rumour, that I'm some loser who had to be air-rescued. I was a mile out further than any of the locals. I was just being awesome. I was going to choke a shark on my thighs if it had come to it.
"We had a blast... We had been drinking a lot before we went out swimming. And we had just got off a 14-hour flight so we were ready to go."