Humber Coastguard have been co-ordinating assistance to a 49 year old male diver this afternoon who, it was reported, was unconscious and very poorly after returning from his dive. He had no particular medical history and he had dived to 13 metres over 30 minutes. It was his second dive of the day.

http://nds.coi.gov.uk//content/detail.aspx?NewsAreaId=2&ReleaseID=415183&SubjectId=7