Lee wrote:

> Four questions:

> 1. Does a DM do the "special orientation dive" or is it done by or at
least
> under the direct supervision of an instructor?

A DM is enough.

> 2. Did anyone see mention of a "special orientation dive" in either of the
> reports that started this?"

No.

> 3. Does the person conducting the special orientation dive have to be
> certified to one of the several levels that include an overhead
environment?

For a swim-through, no. For a cave or cavern, the honest answer is I don't
know. I would certainly never dream of taking a student into one (and would
shy away from going into most of them myself anyway). But I am sure there
are DMs and instructors who would, just as there are people who break the
speed limit any time, and people who dive to 30 meters on their first
unsupervised dive after certification.

> 4. If not, am I the only one who thinks it's nuts to tell divers to stay
out
> of overhead environments and then let any DM (good, bad or average) take
> them into any one they chose to?

No, you're not. But we are back to that elusive definition...

Bjorn