ME: "What exactly is an "advanced diver"?"
Reply From Aldora:
"Hi Mike, if this is in relation to our Aldora adventures post, an advanced diver would be someone that is a seasoned diver, experience with the deep reefs of Cozumel and its currents, and had a good number of dives under their belt. We only take customers who have been diving with us before or for a couple of days before going on the Aldora adventure trip, as the currents can be very strong and some of the sites are quite deep. Hope this answers your question!"
“a good number of dives” is really ambiguous