Re: Ooc
Anita has water sports but not diving. I imagine that will include snorkelling and moving about in the water, and a general knowledge of the dangers of diving, The Bends, etc, but Anita will not have the in-depth knowledge of air mixes, ascent/descent times, regulator valves etc.
It may be something that she can be taught quickly enough, though, and something that she can safely engage in under the supervision of experts.
It'll fall to the GM's interpretation, of course.