The Grand Ayatollah Safi answered a question about diving and fasting.
Question: Please explain the ruling about fasting for those individuals whose job is diving in deep waters.
The Grand Ayatollah Safi: According to Wajeb precaution, going under water with diving clothes, makes the fast void, but if the person is inside a submarine which is like a room and the body is not under water, the fast is not void.
source : Shafaqna
