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. We offer scuba diving instruction for all ages and abilities, encouraging a love and respect for the aquatic world.


For more than 20 years, I have had the great pleasure of taking students, snorkelers and divers of all levels on incredible life-changing adventures around the globe. I have seen the way scuba brings people together, and firmly believe that when people come together, anything is possible.

We founded One Ocean Scuba to use diving education and a love of the ocean as tools to provide outreach into the local community and around the world. Whether you are a new diver earning your certification, an advanced diver looking to perfect your wreck diving skills, or an enthusiastic diver who wants to join the professional ranks of diving in order to share your love of the underwater world with others, we want to take that journey with you.

As you look through our course offerings, try to imagine the path you want to take as a diver. Whether it’s spending more quality time learning something new with your family, escaping to a tranquil location to regain your sense of peace, or challenging yourself with a new and rewarding experience, there are no limits to where scuba can lead you!  

All of us at One Ocean Scuba are excited and honored to share this next adventure with you.

Cindy Rosselle, founder, One Ocean Scuba

Dive. Protect. Repeat.

Dive. We know that experiencing the underwater world fosters an appreciation for the planet in its entirety.
Protect. We believe that with this experience comes a desire to protect our world.
Repeat. We feel that making a difference doesn’t end with sharing a post on social media, but rather requires ongoing dedication to improving things for all life on Earth.

Meet Our Staff