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    1. Local experiences
    2. /Things to do in Key Largo…
    3. /Water Activities
    4. /Scuba Diving
    5. /Dive & Snorkel on a 3.5-Hour Key Largo Reef Trip
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    Dive & Snorkel on a 3.5-Hour Key Largo Reef Trip

    Explore two Upper Keys reef sites from a spacious 50-foot dive vessel

    4.8 stars• 1.2K reviews

    Duration

    3.5 hrs

    Includes

    Tanks, weights & snorkel gear

    Highlights

    Explore two shallow reef locations in the Upper Keys National Sanctuary aboard the 50-foot Sea Dweller III. Dive, snorkel, or ride along with time to enjoy each selected site.

    • Spend more than an hour at each reef location
    • Relax on the open bow or take in distant views from the flybridge
    • Move around the spacious vessel between reef stops
    • Discover sites selected for the day's conditions

    What's Included

    • Tanks and weights for divers
    • Mask, fins, snorkel, and snorkel vest for snorkelers
    • Mask defog
    • Ice water and cookies
    • Reef-safe sunscreen

    Important details

    • Arrive at 7:30 AM for morning divers or 7:45 AM for morning snorkelers; arrive at 12:00 PM for afternoon divers or 12:15 PM for afternoon snorkelers
    • Complete a boat waiver for each person before arrival
    • Ages 2+ only to ride aboard; ages 4+ only to snorkel
    • Travel with an adult if you are under 18 and diving or snorkeling
    • Snorkeling requires comfortable swimming in open water where you cannot stand
    • Bring a digital or physical certification card from a recognized training agency if diving
    • A dive guide is required if your last logged dive was over one year ago; standard trips do not include guides
    • Complete a scuba skills update or show proof of an approved refresher course if your last logged dive was over two years ago
    • Bring a timing device for your dive group; each diver needs a computer on deep dives
    • Do not re-enter the water after consuming alcohol onboard
    • Expect alternate reef locations when weather or water conditions require

    Product ID: P6Q99X

    FAQs

    Bring a swimsuit, towel, any extra snacks or drinks, and seasickness prevention if needed. Divers must also bring physical or digital proof of certification. Wetsuits are recommended from November through April.

    At least one diver in your group must carry a timing device on every dive. Each diver needs a dive computer for deep dives.

    If you consume alcohol on board the Sea Dweller III, you cannot re-enter the water.

    Meeting details

    Sea Dwellers Dive Center, 105 Laguna Ave, Key Largo, FL 33037

    Experience provided by Sea Dwellers Dive Center

    Related locations

    How can we help?

    We are here to assist with special requests, large groups, last minute needs, and any questions you may have.

    Call or text 1-877-GREET-WELL

    Report an issue

    Diver - 2 Dives, 2 Locations, 1 Tank Per Dive

    $117.36

    Includes Tanks & Weights, Ice Water, Cookies, Reef Safe Sunscreen

    0

    Snorkeler: 2 Location Trip

    $85.35

    Minimum Age 2 Years Old: Includes ALL Rental Gear, Snacks & Water *MUST BE ABLE TO SWIM* Pool Noodles Available

    0

    Rider

    $64.01

    Minimum Age 2 Years Old • Boat rider only - may NOT enter the water

    0

    Why book through Greetwell?

    • No Added Fees

      No booking or service fees, ever

    • Concierge Support Included

      Real humans ready to help with timing, questions, or special requests

    • Free Cancellation Available

      Most experiences can be cancelled for a full refund

    Discover what we've curated for you

    What people are saying

    Review 1 of 5
    5/5

    Sea Dwellers is an EXCELLENT dive center in the keys that I would highly recommend. I travelled to Key Largo from Germany, and they took great care of my family. Tony started by coming up with a whole package for us, including getting my daughter her Junior Open Water and my son his Junior Advanced Open Water. He also scheduled us up for 3 more trips for our time here. Once we arrived, he and Jazmine took great care of us in the shop, changing our schedule a few times due to sea conditions. Seeing that my daughter needed a personal touch to get her comfortable, Erica (Ops manager) personally stepped in to make sure she was completely at ease for her course. Emily was my son’s AOW instructor. Her amazing attitude and safety first enabled my son to complete his AOW and Enriched Air certs. Beau (instructional manager) assisted me with gear needs we had and provided me some great advice for future dives. The rest of the staff were top notch. Instructor Ryan also assisted with my daughter’s training, doing an amazing job with her confined pool time. On the boat, their staff also excelled. Captain Merlin was exceptional, really giving my daughter words of encouragement when we had a rough day at sea. Captain Kate only took us out once, but she too was great when we had another rough day. Mates Ryan and Sebastian ensured we were taken care of as well when it came to moving around the boat safely. The seas didn’t always cooperate with us, but the staff at Sea Dwellers was so flexible, knowledgeable and understanding. I see why they are the oldest dive shop in the area and 2nd oldest in the world. Having experienced dive shops all over the world, I have to say my diving experience with them was the best I have had in my 24 years of diving. Thanks you Sea Dwellers!!

    Photo of Brent Hamill

    Brent Hamill

    July 20, 2026

    Review 1 of 1
    5/5

    Sea Dwellers is an EXCELLENT dive center in the keys that I would highly recommend. I travelled to Key Largo from Germany, and they took great care of my family. Tony started by coming up with a whole package for us, including getting my daughter her Junior Open Water and my son his Junior Advanced Open Water. He also scheduled us up for 3 more trips for our time here. Once we arrived, he and Jazmine took great care of us in the shop, changing our schedule a few times due to sea conditions. Seeing that my daughter needed a personal touch to get her comfortable, Erica (Ops manager) personally stepped in to make sure she was completely at ease for her course. Emily was my son’s AOW instructor. Her amazing attitude and safety first enabled my son to complete his AOW and Enriched Air certs. Beau (instructional manager) assisted me with gear needs we had and provided me some great advice for future dives. The rest of the staff were top notch. Instructor Ryan also assisted with my daughter’s training, doing an amazing job with her confined pool time. On the boat, their staff also excelled. Captain Merlin was exceptional, really giving my daughter words of encouragement when we had a rough day at sea. Captain Kate only took us out once, but she too was great when we had another rough day. Mates Ryan and Sebastian ensured we were taken care of as well when it came to moving around the boat safely. The seas didn’t always cooperate with us, but the staff at Sea Dwellers was so flexible, knowledgeable and understanding. I see why they are the oldest dive shop in the area and 2nd oldest in the world. Having experienced dive shops all over the world, I have to say my diving experience with them was the best I have had in my 24 years of diving. Thanks you Sea Dwellers!!

    Photo of Brent Hamill

    Brent Hamill

    July 20, 2026

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