Salt water aspiration syndrome is a rare diving disorder suffered by scuba divers who inhale a mist of seawater, usually from a faulty demand valve, causing irritation of the lungs. It is not the same thing as aspiration of salt water as a bulk liquid, i.e. drowning.[1][2] It can usually be treated by rest for several hours. If severe, medical assessment is required. First described by Carl Edmonds.[3]