The Abacos are a cay-hopping, land-based dive and snorkeling destination, not a single resort reef or a default liveaboard trip. Green Turtle Cay has an established scuba and snorkel operator, Brendal's, while Great Guana Cay has Dive Guana; their exact departures require direct confirmation. Shore-accessible Mermaid Reef near Marsh Harbour, boat-only Bahamas National Trust parks, Hope Town's lighthouse village, Man-O-War's boatbuilding and Elbow Cay's Tahiti Beach give mixed groups meaningful choices. Plan the airport, mainland transfer, ferry and actual operator as one itinerary. March to May is a practical weather-biased starting window, not a guarantee of calm seas. National park rules, variable ferries and offshore weather matter. Dedicated local freedive training and any guaranteed shark or turtle encounter are not verified.