When I did my PADI Wreck Speciality Course three years ago there were two important things I failed to tell my instructor.
1. I was afraid of the dark and
2. I was mildly claustrophobic….
And luckily it didn’t matter in the slightest. The excitement of entering a shipwreck at 30m under the sea totally trumped my fears and it has been a course that since I became an instructor, I relish teaching. You learn so much about mapping, reeling, wrecks themselves, the importance of buoyancy, safety and planning and of the historical importance that it is not only exhilarating but fascinating too. It made me wish my degree had been in underwater archeology rather than psychology.
I would highly recommend this course to anyone and why not combine it with PADI Deep and Nitrox so you can go deeper and stay at depth for longer.