they charge 300 sth for OPEN WATER level, cant remember the exact amount. it is a 3 day 2 night trip at Pulau Au. before the trip, u need to watch 4 hours video and pass a written test, followed by 2 sessions training in a pool in ANA hotel.
better go with friends, u need a dive partner when diving, who is solely in charge of the other party's safety when down in the water
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