There is diving on the entire coast for the mexican riviera, from cancun all the way south past tulum.
The diving is all very similar with a few exceptions, some wrecks around the cancun area, tortugas dive site by playa, a bull shark dive site near playa (only in the winter). Other than that, lots of shallow reefs very similar, with the greatest concentration of dive sites being in the cancun area
Akumal is certainly better done as a snorkel rather than a dive.
Isla mujeres and cancun share many dive sites since they are so close to each other.
Cozumel being ranked 2nd best diving in the world? Not unless all the dive destinations in the indo pacific and such are removed from the planet. If the ranking is just the caribbean then cozumel will be in the top 10, if it's ranking based on the entire planet, it's in the top 100 and certainly toward the bottom of the list.
There is no shore diving that I know of in Cancun.
The diving is all very similar with a few exceptions, some wrecks around the cancun area, tortugas dive site by playa, a bull shark dive site near playa (only in the winter). Other than that, lots of shallow reefs very similar, with the greatest concentration of dive sites being in the cancun area
Akumal is certainly better done as a snorkel rather than a dive.
Isla mujeres and cancun share many dive sites since they are so close to each other.
Cozumel being ranked 2nd best diving in the world? Not unless all the dive destinations in the indo pacific and such are removed from the planet. If the ranking is just the caribbean then cozumel will be in the top 10, if it's ranking based on the entire planet, it's in the top 100 and certainly toward the bottom of the list.
There is no shore diving that I know of in Cancun.