Chocoholic
Contributor
I like Aquanauts too. You can snorkle and see a lot of fish off the beach in Puerto Aventuras right in front of the Omni, I saw an eagle ray and a stingray there too. You can see turtles off of Puerto Aventuras but many more out of Akumal. (snorkeling off of the beach in Akumal is a good idea too.)
Consider going to see Coba; it is close to the turn off for Tulum and is an awesome sight, you can climb the tallest pyramid. Tulum is breathtaking, Coba is aweinspiring. If you go to Tulum take your bathing suits so you can swim down on the gorgeous beach.
I second Yal Ku lagoon, it isn't as touristy as Xel-Ha and much cheaper. Xel-ha has more stuff, like a rope swing, a "river" raft ride, a dolphin pen, an underwater cave, fish feeding stations and all inclusive food. YalKu is a lagoon with lots of fish, a tiny parking lot, not many people and a taco stand. Have fun.
Consider going to see Coba; it is close to the turn off for Tulum and is an awesome sight, you can climb the tallest pyramid. Tulum is breathtaking, Coba is aweinspiring. If you go to Tulum take your bathing suits so you can swim down on the gorgeous beach.
I second Yal Ku lagoon, it isn't as touristy as Xel-Ha and much cheaper. Xel-ha has more stuff, like a rope swing, a "river" raft ride, a dolphin pen, an underwater cave, fish feeding stations and all inclusive food. YalKu is a lagoon with lots of fish, a tiny parking lot, not many people and a taco stand. Have fun.