Ive been there, and it is a blast. Comment from the tour guide to the newly wedded couple before the trip was to the bride "do you have insurance?"

Also he mentioned that they use plastic cages , so as not to hurt the endangered species of shark, Lol this was a joke of course.
I looked at the welds on the cages that we climbed in, Made of Rebars and not very strong. All added to the experience, glad you enjoyed!!