Just returned from a week in Mexico. We stayed south of Cancun about 50 miles. Resort was a let down but water was awesome and I was able to try my hand at snorkeling a little right at the beach on the resort.
Was able to get a few underwater pics with the phone. My wife and I hope to return again, maybe this summer or for sure next January/February at which point I will have my own snorkeling gear and an underwater camera.
Here are a few pics, not the best but the best I could do with the Samsung in a waterproof pouch from Seawag.