Zero Wind Equals Flat Seas Mean Perfect Key Largo Diving Conditions. Scuba diving in Key Largo doesn’t get any better than when there is no wind blowing! Captain Dave took DEEPER out to the reef with Inst. Holly as private guide for a diver, Inst. Glenn as group dive guide, and Inst. David as snorkeling guide. We also had a wife of a diver join for the boat ride since it’s such a perfect day on the water.