Two Boats and a Lagoon

We cater to smaller, more intimate groups and are situated in the lagoon at the world-famous Jules Undersea Lodge, but that’s really just the beginning.

Dive Training

At Ocean First, we aim to create lifelong students and stewards of the sea by providing adventure in a fun, safe, and comfortable learning environment.

Citizen Science

With our very own research station at the internationally acclaimed Marine Lab, it’s never been easier to get involved in exciting citizen science projects. 

Ocean First has been a pioneer in the dive industry for over 15 years and we’ve brought that same level of progressive excellence to our Key Largo location. Whether learning to dive, continuing your education, or participating in one of our citizen science research projects, at Ocean First Key Largo you’re bound to have an experience that lasts a lifetime.

Citizen Science - OFI Research Station

As an exciting extension to our partnership with MarineLab, our very own nonprofit, Ocean First Institute, established a research facility next to the dive shop. This exciting development will allow Ocean First Institute to fulfill its mission of conservation through research and education by affording staff and associated students opportunities to conduct ecologically significant and conservation-minded research, often involving endangered or imperiled species and heavily impacted habitats. The purpose of the research is to fill gaps of knowledge that are key for science-based conservation, and to work with students through their educational programs to produce generations of conservation minded scientists and stewards for the environment.

TIDES is an immersive science camp for 12-18 year-olds that takes students on a transformative journey into the underwater world of marine science and ocean conservation. Warning... life-changing experience ahead! Click here to Learn More!

Ocean First invites you to explore the other 70% of the planet. Whether you’re after tropical reefs, land excursions, or your own custom-tailored adventure of a lifetime, we are a full-service travel agency bound only by your imagination.

Join us in Key Largo to complete your training in a tropical paradise!

Click here to learn more!


We are proud to announce our new partnership with REEF (Reef Environmental Education Foundation)  

Ocean First Conservation Partnership with REEF

Learn more about Reef Environmental Education Foundation HERE