Hours of Operation

Tuesday - Friday 8:30 AM - 2:30 PM

Saturday & Sunday 8:00 AM - 4:00 PM

November 22, December 24 & 25, December 31, January 1


Reservations can be made any time of the week - please call 305.451.2353 and leave a message! We WILL return your call!

Jules' has free WIFI!

Check us out on Youtube!

The Lodge

Pizza Lunch In The Lodge!
Overnight Stays
PADI Specialties

The Lagoon

Recreational Divers
Dive Professionals


Dive the Coral Reef with Island Ventures!

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Certifications! Elearning

Jules' now offers Open Water and Advanced Open Water certification with your first two dives in the lagoon and a peek into our world famous Undersea Lodge! Call us for more details 305.451.2353

Open Water: $499 with gear

Advanced Open Water: $399 with gear

LagoonThe Lagoon

The Lagoon at Key Largo Undersea Park has something to offer the snorkeler, SCUBA diver candidate, SCUBA professional, or recreational diver!

Tour the tropical mangrove habitat of Key Largo Undersea Park's Emerald Lagoon and explore the underwater world of the future. You will find a marine archaeology exhibit, the MarineLab underwater research and education habitat, and Jules' Undersea Lodge, the first and only underwater hotel in the world.

Jules' Undersea Lodge (formerly La Chalupa Research Lab) also served as the site of the historic 1995 sea-space link-up in which ocean pioneers Scott Carpenter and Ian Koblick spoke with astronaut Mike Gernhardt aboard the space shuttle Endeavour. Both Jules' Undersea Lodge and the MarineLab have been used in research on extended space travel.


Click on the map for a larger version. The lagoon is sheltered but is still considered open water. It's 30 feet deep, and has platforms and down lines for SCUBA training.

Besides being an excellent place for learning to snorkel or dive, the Lagoon is home to Jules' Undersea Lodge, the world's only underwater hotel, and the MarineLab Undersea Laboratory. Nowhere else in the world are there TWO operational underwater habitats!

Whether you're a SCUBA instructor looking for a place to work with your students, a diver interested in getting a unique PADI Specialty, or someone interested in discovering SCUBA diving - the Lagoon at Key Largo Undersea Park is the place for you! Prices do not include sales tax.

Snorkel: $15 per person

Dives: $35 per person per day