Welcome to Ocean First Key Largo

Discover Top Diving in the Florida Keys

Ocean First has officially opened its newest location in Key Largo, Florida — widely recognized as the diving capital of the United States. Surrounded by the vibrant tropical waters of the Florida Keys, Key Largo offers diverse marine environments including mangroves, seagrass beds, and world-class coral reefs. Whether you're an experienced diver or just starting out, Ocean First Key Largo provides access to unforgettable underwater experiences.

Book Online Now

Two Boats and a Lagoon

Located in the tranquil lagoon at Jules Undersea Lodge in Key Largo, we offer intimate, personalized dive trips for small groups in a truly unique setting.

Dive Training

At Ocean First, we offer comprehensive scuba dive training in a fun, safe, and comfortable environment — fostering lifelong divers and committed ocean stewards.

Citizen Science

Join citizen science projects at our Marine Lab research station and contribute to vital marine conservation initiatives.

With over 15 years in the scuba industry, Ocean First continues to lead in innovation and diver education. Our Key Largo location ensures divers of all experience levels can enjoy exceptional underwater adventures — from beginner scuba classes to advanced training and citizen science research.

Book Online Now!

Absolutely stellar experience! The entire team was professional yet friendly. Al is an amazing guide and made sure everyone felt safe and supported. 10/10 would dive with Ocean First again!

- Matt N. (June 2025)

Jardin and his crew were incredible. Alisia was the most passionate and enthusiastic dive guide we've ever had — she made our 100th dive unforgettable.

- Robert S. (June 2025)

We had a wonderful experience! The crew took us to six incredible reef and wreck dives while we completed AOW training. We'll definitely return on our next Key Largo trip!

- Kristin K. (June 2025)

Citizen Science at the OFI Research Station

As part of our partnership with MarineLab, the Ocean First Institute (OFI) has established a state-of-the-art research facility adjacent to our Key Largo dive shop. This facility supports groundbreaking conservation research focused on endangered species and impacted marine habitats.

Through hands-on student programs and science-based conservation projects, OFI works to train the next generation of conservation-minded scientists and ensure a sustainable future for our oceans.

TIDES is an immersive science camp for 12–18 year-olds, offering a transformational journey into marine science and ocean conservation. Learn more

Scuba Diving in Key Largo with Ocean First

Explore the world’s oceans with Ocean First. Whether you're seeking tropical reefs, land excursions, or custom dive adventures, we offer full-service travel planning and expert scuba training in paradise.