jhayes75
Contributor
The number one rule in Scuba, never hold your breath. Regardless if he were buddy breathing, or sharing air, you never hold your breath. Buddy breathing between students is common. I can't tell how many times my instructor stressed to never hold your breath during training, but it seemed like every 5 minutes or so.
Apparently he held his breath on the ascent and sustained a lung-over expansion injury.
IMHO he shouldn't have been buddy breathing with a student. He is a certified diver and even though he was being re-certed, is entitled to do what he wants, his daughter is a student.