We've done two dives in the past year with Two D's Diving and we plan to return next month. There's a good reason they are rated excellent by most everyone. Here is one more reason:
Last outing, the owner (Deanna) and Dive Master Julio shared a boat with a crew from a different company and their guests. One of these other divers had a leaky hose and he asked the leader of that crew if it was ok. The leader said oh sure it was, and was going to send him into the water! Deanna immediately recognized the danger and took charge, telling the other crew that it was not safe and she made sure they fixed the problem. That situation was an eye-opener, knowing there are dive outfits in Cozumel that would put their clients at serious risk.
When you are diving, especially rookie divers, you want Deanna and her crew, not only for the fantastic dives and pleasant conversation, but their concern for safety and readiness to take charge of problems. Watching Two Ds in action, I wouldn't dive with anyone else. Don't forget to stop by the Thirsty Cougar or Wet Wendys after your dive for Cozumel's best frozen margaritas!