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2 hours 30 minutes
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Snorkeling is fun, safe, and easy aboard the Sundiver III. Join us for a 2.5 hour underwater tour to the shallow, inner, coral reefs located at the "World Famous" Key Largo National Marine Sanctuary, also known as the original John Pennekamp Underwater State Park. Sundiver was founded in 1983 and our captains with over 40 years experience will bring you to the most unique and pristine reefs located inside the Florida Keys Marine Sanctuary. You will be absolutely amazed at the underwater world that lives just offshore of Key Largo. Our friendly crew specializes in kids, families, and first time snorkelers. As long as you can swim, we can teach you to snorkel.
Infants and small children can ride in a pram or stroller
Public transportation options are available nearby
Infants are required to sit on an adult’s lap
Not recommended for travelers with poor cardiovascular health
Suitable for all physical fitness levels
Yes, Infants are allowed onboard the vessel. They count as a passenger so we must charge the "childs" fee per infant.
For a full refund, cancel at least 24 hours before the scheduled departure time.
A relaxing snorkeling experience on the surface of the water at the shallow coral reefs found inside the Florida Keys National Marine Sanctuary, also known as John Pennekamp Underwater State Park in Key Largo. Sundiver was founded in 1983 and our captains with over 40 years experience will bring you to the most unique and pristine coral reefs located inside the Florida Keys Marine Sanctuary. You will be absolutely amazed at the underwater world that lives just offshore of Key Largo. Our friendly crew specializes in kids, families, and first time snorkelers. As long as you can swim, we can teach you to snorkel.
Rental Mask, Fins and Life Vest included
Snorkel tube not included, You can bring your personal snorkel or we offer snorkels for sale for $15
26 reviews
Total reviews and rating from Viator & Tripadvisor
Tracey K,,Jan 4, 2026
- Review from Viator
Great guide and captain but too many people on the boat. Next time is go with a smaller boat and fewer people.
Companion22653676451,,Dec 31, 2025
- Review from Tripadvisor
We had a really nice snorkel tour. The boat was tidy and the equipment was well maintained. We saw the crew bleaching the equipment getting it ready for future users. The crew, Liber, Justice and Captain Rick were very safety minded and fun. The water was a little choppy, but it was clear and we saw some amazing fish. We definitely recommend this tour.
Michelle G,,Dec 30, 2025
- Review from Viator
This was a perfect snorkeling experience, especially for families. The snorkeling location was super safe, the staff was very knowledgeable and directive- they left nothing up to chance.

Susan H,,Dec 28, 2025
- Review from Viator
Justis and his wife, along with captain Joe were fantastic. Great experience for my husband and I and especially my 6 year old.
Kathrine Z,,Dec 28, 2025
- Review from Viator
Very shallow. Beautiful fish and coral. Water was comfortable in December. Lots of fun! Great Captain and mates, very helpful and love sharing local info.
Vishal J,,Dec 25, 2025
- Review from Viator
As we are not swimmers, we were not guided initially when booked. Since I took shallow waters, through we can adjust. Ideally we shouldn’t have taken shallow waters, so that at least we could hang on near the boat and see the reefs. Nobody guided that during booking or on multiple follow up calls.
David G,,Nov 12, 2025
- Review from Viator
Fantastic trip to the reef incredible staff made us feel so welcome was a real joy. Even though weather wasn’t the best it was still a lovely experience.
Daniel G,,Nov 11, 2025
- Review from Viator
The Captain and the mate are great the snorkeling I been snorkeling deffernt places this is my top three so so close to the reef, cool fish but why not the 5 stars great question and I was going to rate this lower but the wife told me no 4. Here are the reasons 1. The welcome lady who you first see was rude and condescending. 2. It’s another 3+ mile ride to the boat. A nice couple ask for a ride, they did jot know and had an Uber ride they should say that. 3. I as many read included “Use of snorkel equipment” then detail of the equipment that all I want. Then you arrive you need the Tub as you read on a tub is not included as I stated been snorkeling many times this was a first since I have gear at home this will cost you $15.00 to $25.00 per person. This should be included in the same line item. 4. When we arrived at the boat meeting place 3+ miles away greeted by another lady with the same attitude as the First Lady I told my wife are they twins no just the same attitude. Do I think we got hustled Yes, not like me but I’m getting older so I miss things Thanks Captain John and Mate Carolyne
Danny K,,Nov 5, 2025
- Review from Viator
Jack and Caroline were great. Visibility was about 35 feet. Lots of variation in the reef and fish. No one got sea sick. All seven of our group got in the water and saw the reef, even the eight year old. It was the first time for several of them.
NATALIA R,,Nov 3, 2025
- Review from Viator
The experience is great and the captain on board and his mate are lovely. However, I don’t like to have hired a tour IN SPANISH and arrive and that is NOT the case. You have to keep in mind that you have to buy the snorkel tubes for 15 dol or bring them from home.
Operated by Sundiver Snorkel Tours