Most dive operations seem to have a 2 tank/day dive option. I'm not sure exactly what this means. The last time I was in Cozumel, I used Dive with Martin. We went out in the morning and dove 2 different sites (used 1 tank at each site). The boat dropped us off at the hotel, we had lunch and then went out again in the afternoon. Dove 2 sites again using 1 tank at each site. All theses dives were included in a standard package - described as "Multi-Day Dive Packages - Two Tanks Per Day". This would seem to be 4 tanks per day. What am I missing?
