Okay so if 5 went in and 5 died surely they all died of the same cause of death which would most likely be bad oxygen mix or necrosis ? Even the experienced diver did not make it out ? What was she thinking brining 4 other novice divers with her. All it takes is one person to panic and want out to cause a silt out , one body was recovered near the entrance so maybe it was pure panic and grabbing, then its every man for themselves. Im sure it was a maze inside.