I'm sure she means 80 ft3, the standard aluminum scuba tank. I've wanted to go to the Flower Gardens for awhile; if this was not during the week in a semester I'd jump on board; most of the trips are weekend and include two dive days. This one looks like 2 1/2 for around the same price. For anyone who does not know, the dives at the Flower Gardens are all relatively deep at around 70-80 ft. Nitrox really shines in this situation, 4 tanks/day at some depth.