Antigua is encircled by incredibly well-preserved coral reefs, dramatic limestone drop-offs, and centuries-old shipwrecks. With average water temperatures hovering around 80°F (26°C) year-round and visibility frequently exceeding 100 feet, the island is a premier destination for underwater exploration. Whether you are seeking a calm, shallow marine park to earn your open water certification or an exhilarating deep-water drift dive, the underwater topography here caters to eve