One Ocean Scuba in Rockville, Maryland, is a full-service PADI 5-Star Dive Center and one of the world's first PADI Eco-centers, offering scuba diving and snorkeling instruction for all ages and abilities and encouraging a love and respect for the aquatic world. The shop runs courses from Discover Scuba Diving through Divemaster, plus specialty and continuing education courses, and is also a full-service dive shop offering scuba gear rentals, tank fills and inspections, and gear repair and maintenance.