A diver was airlifted to hospital suffering from symptoms of decompression sickness after a 48-metre dive.
The 51-year-old man from Threlkeld in Cumbria was suffering from dizziness, headaches and vomiting after a dive off the east coast of Fife.
The dive boat telephoned the coastguard, and was put in contact with Aberdeen Royal Infirmary, where a doctor advised helicopter evacuation. An RAF rescue helicopter from Lossiemouth airlifted the diver to hospital.
Forth Coastguard watch manager Stephen Higgins said: 'A swift call to the coastguard is absolutely crucial if divers suspect decompression sickness. Minutes can save lives in these cases. It was a perfectly normal dive - the diver completed all his stops and yet he still suffered decompression sickness.'