docmartin
Contributor
regarding marine life it seems to me that there is a drop off from north to south. cancun is amazingly fishy, playa has apparently a lot of fish, too, but fewer than cancun, puerto aventuras may be less than playa and akumal has less than puerto. admittedly, my sample size is not great because I have not done many dives in cancun or playa but i do know puerto, akumal and cozumel quite well. last time i was in Coz (6 months before Wilma) i recall thinking that there really were not that many fish. i definitely did not see many of the dense aggregations that you can see from Puerto Aventuras north.