After spending a week in Australia at a church conference, Justin Bieber headed off on a sun holiday for some R&R, but things soon took a turn for the disastrous.

The singer was swimming in the ocean with his pal Joe Termini when a reef shark attacked, leaving Joe with a vicious gash on his chest. Justin was left unharmed but took to Instagram to hit out at whoever had assured him that reef sharks were safe to swim around. "Exactly why i hate sharks they told us reef sharks don't bite @joetermini" he wrote, posting a picture of Joe lying on the ground with a deep cut on the left side of his chest. 

Joe himself also posted an altogether more gory close-up shot of the bloody gash with the caption, "It's been a good day." Although Justin was lef unharmed and his pal's injury is not life-threatening, the pair were no doubt shook up after the terrifying incident.

Just days beforehand in Australia, the Baby singer had another run-in with a shark, but managed to avoid getting too close. "I was really cold and I’m pretty sure I saw a fin," he told fans of his swim off Sydney's Pacific Ocean coast. "And that was not cool!"

Justin had been visiting Sydney for a five-day conference with the Hillsong Church, which his close friend and rumoured love interest Hailey Baldwin also took part in. The pair spent much of their week hanging out with Pastor Carl Lentz and his wife Laura:

 

me n Lauz came with the vintage tees today

A photo posted by Hailey Baldwin (@haileybaldwin) on

Hailey didn't join Justin and Joe on their ill-fated swim in the sea, but she did have some fun on Twitter after the incident, writing, "Of course Joey would get bit by a shark."

Maybe it's time Justin took a break from open-water swimming…