The man told his rescuers he was swimming on the western side of Fraser Island, when he suddenly felt intense pain.
Queensland Ambulance Service (QAS) paramedics treated him on the scene, before the rescue chopper was called.
The holidaymaker was airlifted to Hervey Bay hospital in a stable condition, but reportedly in a lot of pain.
The 2017-2018 financial year was a record year for LifeFlight for lifesaving missions with its aeromedical crews, community helicopters and Air Ambulance jets performing a record 5,452 missions throughout Queensland and around the world.
LifeFlight is a community-based charity funded and supported by the LifeFlight Foundation
To support the LifeFlight Foundation visit:www.lifeflightfoundation.org.au