Two Boats and a Lagoon - Premier Diving and Citizen Science in Key Largo
With over 15 years of experience, Ocean First brings progressive diving excellence and environmental stewardship to our Key Largo location. Whether you're learning to dive, exploring vibrant reefs and historic shipwrecks, or participating in citizen science research projects at Ocean First Key Largo, you're guaranteed an unforgettable adventure.
Book your dive experience online now!
Our Boats - Comfortable, Safe, and US Coast Guard-Approved
Ocean First operates two 30' US Coast Guard-approved Island Hopper charter boats, designed for comfort and safety. These spacious boats are perfect for diving and snorkeling trips in the Florida Keys, with each boat accommodating up to 12 divers. Our experienced crew and instructors prioritize your safety while guiding you to some of the best Florida Keys dive sites.
Book your dive or snorkel trip today!
The Lagoon - Perfect for Scuba Training and Refresher Dives
Located at MarineLab Undersea Park, home of the world-renowned Jules' Undersea Lab, The Lagoon offers the ideal environment for a refresher dive, equipment check, or additional scuba skills training. With a max depth of 28 feet (8.5 meters), it’s perfect for divers of all levels. Our resident manatees, along with other exciting fish species and seahorses, make training with us even more memorable.
Our Partnerships - Advancing Ocean Conservation and Education
The Ocean First Family is a collective of organizations dedicated to increasing ocean awareness, promoting marine conservation, and empowering communities to become passionate stewards of their marine environments. At Ocean First Key Largo, we collaborate with sister organizations that provide education, research, and outreach to inspire positive change.
Since 2008, Ocean First in Boulder, Colorado, has served as a full-service swim, scuba, and travel center. Adventure, education, and preservation come together, whether taking swimming lessons, earning scuba certification, or traveling with us.
Preserving ocean ecosystems through research-driven conservation efforts and environmental education.
Conservation: Collaborates with local partners to conserve endangered species and engage the public.
Research: Focused on understanding natural ecosystems and species interactions.
Education: Offers hands-on marine science learning for youth in classroom and field.
Founded in 1970, Marine Resources Development Foundation (MRDF) promotes responsible use of marine resources via education, research, and collaboration. MarineLab environmental education reaches over 5,000 students annually with immersive experiences in the Florida Keys.
Founded in 1990, Reef Environmental Education Foundation (REEF) is a marine conservation nonprofit that protects ocean biodiversity by engaging the public in citizen science, education, and research. Ocean First and REEF are working together to host and support marine-focused events like free fish ID classes and volunteer fish survey dives in Key Largo that engage the community in citizen science and reef monitoring.
Coral Restoration Foundation (CRF) is a nonprofit dedicated to restoring threatened coral reefs by growing corals in offshore nurseries and outplanting them onto degraded reefs while advancing restoration science and education. Ocean First looks forward to partnering with CRF on TIDES in 2026 and taking part in Coralpalooza™ Dive Day 2026.