A British man has died while diving on the Great Barrier Reef, an Australian tourism company said.
The 60-year-old certified diver from England became the third person to die on the reef in as many days.
He was rescued from the bottom of the ocean at Agincourt Reef, near Port Douglas, on Friday after he was seen to have had his breathing regulator out of his mouth, the Association of Marine Park Tourism Operators said.
The company's executive director Col McKenzie said: "After an extended effort with no response, the diver was declared dead."
His death came after two French tourists - Jacques Goron, 76, and Danielle Franck, 74 - reportedly died while snorkelling on Michaelmas Cay, near Cairns, on Wednesday.
The English tourist, who was on his second dive of the day, was 15m below the surface when he was found and pulled aboard the Silver Sonic dive boat, McKenzie said.
The victim received CPR both on board the vessel and from a doctor airlifted to a nearby helicopter pad, he added.
McKenzie said: "Accidents like this are a tragedy for the surviving family members, the crew and the passengers."
The Silver Sonic has operated for 11 years in which it has carried 230,000 divers without a fatality, according to the Association of Marine Park Tourism Operators.