Akumal Beach, Mayan Riviera Mexico is the most wonderful place in the world. I got married there in March of 2007 and it was so wonderful we went the next year on a belated honeymoon! I even got to wear a giant sombrero for awhile during the wedding supper!
The one downside was my wedding hair was done at a nearby hotel, and they made me look like Rod Stewart....thank crap I brought hair pins and a sister in law that can fix botches hair!! (Thanks Crossin!

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We swam in the ocean with turtles, not in a park or an aquarium but in the sea. There were all sorts of them in the small sectioned off area in the Akumal Bay, sectioned off to protect them from the boats.
The ruins at nearby Tulum, and ancient Mayan site were such a sight to behold as well. So steeped in history and beutiful to see.
The shops right outside the ruins are something tp see as well, there were Tribal dancers there doing native Mayan dances, and of course the shops.
The beach at Akumal was bar none gorgeous. Powder white sand and gorgeous turquoise seas. The small town of Akumal was such a quiet little town to be in as well, none of the hullaballo of Playa Del Carmen or Cancun. This is a sleepy little town.
I highly recommend this sunny little stretch of paradise. I know I'm going back next year!