A SEVERE reaction to a marine stinger prompted paramedics to rush to Gladstone Marina on Sunday afternoon to aid a middle aged woman.
Initial calls from the vessel 'White Riverina' feared the worst - a sting to the arm by the fatal irukandji.
The vessel had been 10 nautical miles off Gladstone when the sting occurred about 1pm.
The woman was taken to hospital by ambulance in a stable condition.
Staff at Gladstone Hospital yesterday could not give The Observer details about the sting.
The incident prompted a safety warning from the Royal Lifesaving Society to remain cautious during summer.
Todd Freeman has attended several calls for suspected marine stings so far this season.
"Southern waters are getting warmer which in turn attracts venomous forms of marine stingers in abundance," he said.
"An irukandji sting would be uncommon but certainly not impossible in Gladstone."
Mr Freeman admitted it was unfortunate that summer attracted jellyfish and swimmers to the water.
"Those who choose to swim, snorkel or dive in tropical waters are taking an inherent and inevitable risk, however, there are measures that can be taken to minimise risks," he said.
"Wear protective clothing for a start.
"By covering arms, legs and torso, it considerably reduces the likelihood of serious injury or death."