Of the three spots (Catalina Cove, Boca Catalina and Malmok) this was my least favorite. Not because the snorkeling was necessarily poor, it was not, but the tour boats tend to stop right next to the coral cliffs to do their Tarzan swinging. Fortunately the entry cove does not have a mooring anchorage. The coral wall is interesting to explore and there is a cave chute that you can swim though (underwater) just south of the entry cove.