GrumpyOldGuy
Contributor
The DM gives you a dive briefing and to assist you getting off and on the boat in a safe manner. Once you descend, you are on your own.
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Left off my 3rd question:
What if you don't hire your own DM, you are just on your own?? The fees paid are literally just for ferrying to to the dive spot, there's no overall DM that takes the group?