My DM said he had not seen a dolphin in 5 years... I had read a story about a jailbreak on TripAdvisor... Just no confirmation of if it's true. Made me wonder if this was a wild dolphin or an escapee.
Sounds like another reason to use the operators of the north I have been in Cozumel for 5 years exactly. I've seen dolphins at least a dozen times and I rarely am on the boats any longer. Mostly in office the past 2 years.
If the TA forum discussion is from last winter its accurate. If its from recently, it is not accurate. It's worth noting the escaped dolphins from after the storm also returned to Chankanaab the same day. I guess they knew where to get an easy meal.