Marathon Key Snorkeling Adventure

From$109.99
3 hours
Key West, USA

About this activity

Enjoy a 3-hour guided snorkeling adventure at Sombrero Reef in Marathon Key, exploring vibrant coral reefs and swimming with tropical fish.

Highlights

  • Explore vibrant coral reefs
  • Swim with tropical fish
  • Relax on a comfortable pontoon
  • Guided tour by experienced crew
  • Ideal for all skill levels

Full description

Dive into the crystal-clear waters of Marathon Key on a 3-hour guided snorkeling adventure at the renowned Sombrero Reef. This experience offers an unparalleled opportunity to explore vibrant coral formations and swim alongside a diverse array of tropical fish. Aboard a comfortable pontoon boat, you'll be guided by experienced crew members who ensure a safe and enjoyable outing for all skill levels. Whether you're a seasoned snorkeler or a first-timer, this adventure promises unforgettable underwater encounters in one of Florida's most picturesque settings.

Included / Excluded

  • 3-hour pontoon boat ride
  • Guided snorkeling at Sombrero Reef
  • All necessary snorkeling equipment
  • Food and beverages

Meeting point

Start Location

Unknown location

Important information

Know before you book

  • Check the weather forecast for optimal snorkeling conditions.
  • Confirm the departure time and location prior to your trip.
  • Ensure you have a valid ID for check-in purposes.

Know before you go

  • Wear comfortable swimwear and bring a towel.
  • Apply waterproof sunscreen to protect your skin.
  • Consider bringing a waterproof camera to capture underwater moments.

Cancellation policy

Free cancellation up to 1 days before the activity starts

For a full refund, cancel at least 24 hours before the scheduled departure time.

Traveler reviews

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10

Beautiful underwater experience!

It was a fabulous experience. So many different fish and corals. We will definitely do this experience again on our next trip to the Keys.

angelgoldbergJun 24, 2026TRIPADVISOR

Excellent Snorkeling Adventure

Great snorkel adventure! Captain Candace and First Mate Corey were awesome! Excellent stewards of the reef and super helpful to everyone. No condescension, very helpful and genuinely concerned that a good time at was had by all. And we did have a great time! Highly recommend!

TammieA992Jun 17, 2026TRIPADVISOR

Great time in Sombrero Reef

Great experience! Loved snorkeling in Sombrero Reef. Our boat captains were fantastic and you can tell they loved what they do.

Aaron_TJun 8, 2026VIATOR

Swithed to lower priced tour without refund.

The tour operator and contact # were never provided and the meeting point was an empty parking lot behind Marathon City Offices. The parent company in N.J. switched me to another operator of a catamaran the following day which I could have done myself for almost half that price.

William_BApr 13, 2026VIATOR

Deceptive & manages remotely. Look elsewhere for reliability + knowledge

Didn’t show up & lied re refund timeline

jenniferpZ2556IIMar 6, 2026TRIPADVISOR