Tours/Key West/Marathon Key: 3-hour Snorkeling adventure on a Pontoon at Sombrero Reef
Viator · group up to 49 pax

Marathon Key: 3-hour Snorkeling adventure on a Pontoon at Sombrero Reef

4.1(58)Key West1 hour
VIATOR3.8(18)TRIPADVISOR4.3(40)

Description

Enjoy a 3-hour snorkeling adventure in Marathon Key at one of the world's most incredible reefs. Sombrero Reef is alive. It is a place where parrotfish feed on the living coral while trumpetfish try to blend in among its branches. The reef is protected, so you can expect to see large schools of grunts and snappers swimming among large groupers hiding in the crags and looking for a meal. The great barrier reefs on our planet are precious. Like underwater rainforests, they teem with wildlife and colorful corals. You are welcome to bring food and drinks with you.

Tour Options

Sunset Cruise Snorkeling
  • Sunset Cruise : Enjoy a champagne toast! Duration: 2 hours
Marathon Key: 3-hour Snorkeling adventure on a Pontoon at Sombrero Reef

Highlights

Use of Snorkelling equipment

What's included

Included
Use of Snorkelling equipment
Not included
You are welcome to bring your own no glass please

Traveller Ratings

4.1
58 reviews
5
42
4
3
3
2
2
1
1
10

Important Information

  • Suitable for all physical fitness levels

Reviews(58)

P
P3752JQkatherinej
July 16, 2026
Fun trip despite the wind

Captain Candace and Tanner were great but unfortunately the weather was not our friend The water was VERY ROUGH Made for a VERY limited time in the water for me (65 yr old, first time snooker) My 16 year old granddaughter LOVED her time in the water Definitely a must do

A
angelgoldberg
June 24, 2026
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.

T
TammieA992
June 17, 2026
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!

A
Aaron_T
June 8, 2026
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.

Operator response

Thank you for your wonderful review! We're thrilled to hear you had a great time snorkeling at Sombrero Reef. It means a lot to know that our captains helped make your experience special. Their passion for the water and for sharing the beauty of the Florida Keys with our guests is something we're very proud of. We appreciate you choosing to join us and hope to welcome you back aboard for another unforgettable adventure soon!

W
William_B
April 13, 2026
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.

Operator response

We understand how frustrating it must have been not having the proper contact information or a clear meeting point, and we sincerely apologize for the lack of communication. Your feedback is very important to us, and we would really appreciate the opportunity to look into this situation further and make things right. Please kindly contact our office at your earliest convenience so we can review your case in detail and assist you accordingly. We’re here to help and want to ensure you receive the experience you originally expected. Thank you again for bringing this to our attention.

J
jenniferpZ2556II
March 6, 2026
Deceptive & manages remotely. Look elsewhere for reliability + knowledge

Didn’t show up & lied re refund timeline

Operator response

Thank you for your feedback. We’re sorry to hear that you were disappointed with your experience. According to our records, the refund was processed, and once a refund is issued it may take several business days for the funds to appear on your statement depending on your bank or credit card provider. We also want to clarify that this experience is operated by a local captain in Marathon, and the activity runs directly from the marina. We always encourage guests to contact us through the booking platform if they have questions so we can assist as quickly as possible. We appreciate your feedback and wish you the best with your future travels.

P
Peter_S
March 3, 2026
I was over charged for...

I was over charged for the trip by booking through Viator. The price was double compared to booking straight through the snorkeling vendor.

Operator response

Thank you for your feedback. The price shown on Viator includes taxes and the booking platform service fees, which may make the total appear higher than the base price advertised directly by the local operator. In many cases, the price guests see elsewhere is before taxes and fees are added at checkout. All pricing shown on Viator is the final price at the time of booking, so there are no additional charges when you arrive. We appreciate you sharing your comments and hope you still enjoyed your snorkeling experience at Sombrero Reef.

S
Suzanne_L
February 25, 2026
Go directly to snorkle company not Viatot

Lack of communication from Viator or from Snorkle company. Text from one company reservation was with another. Almost missed it. Trip was great. Price through Viator was double what I would have paid going directly to company. I had good experiences throughout Greece Malta and Italy. Disappointmened this time.

1 people found this helpful
Operator response

Thank you for your feedback. We’re glad to hear that you ultimately enjoyed the snorkeling trip at Sombrero Reef. Regarding the price, the cost is the same whether guests book directly or through the platform, as taxes and processing fees apply in both cases. Sometimes travelers compare the final price to a base rate shown before taxes and fees, which can make it appear different. We also appreciate your comments about communication and will continue working with our partners to make the check-in process as smooth as possible for all guests. Thank you for sharing your experience.

A
Amy_B
February 21, 2026
Scammed and out of money

Would have given it zero stars if I could. We were scammed. Given a pin on Google maps, no address, no one there when we arrived. No answer on the phone number. It was behind the City building. They were very sweet and said they've never heard of any tours there. So sad. Last day of vacation. Too late to get another tour. Reputable companies were sold out and very sweet. They said that they have never heard of this buisness. Zero contact information. Says based out of NY. Do NOT get tricked. After looking further, says 3 hour snorkeling cruise as title THEN, no snorkeling, 2 hour cruise- comes with snorkeling equipment! Haha. Out $178 for me and my 8 year old daughter. Trying to get a refund. Viator was easy to get on the phone and tried to call the company as well, no luck. Scammed, sad, and out a lot of money:(

Operator response

We’re sorry to hear about your frustration and disappointment. The meeting location and address are clearly listed on the voucher and tickets provided after booking. The check-in location is at the Visitor Services building by the marina, on the bayside of the road, which is a large building with a gift shop and a common meeting point for several local water activities. Many guests successfully check in there each day using the instructions provided. If there was any difficulty locating the meeting point, our team is normally available by phone to assist. The tour is a 3-hour experience that includes time on the water and snorkeling equipment, depending on sea conditions and the day’s schedule. If you contacted Viator regarding your reservation, their support team can also assist in reviewing the booking details. We appreciate your feedback and are sorry your day did not go as planned.

J
James F
February 20, 2026
Snorkeling trip matarathons sombrero reef

Great snorkeling trip with the Captain fun snorkeling at the sombrero reef wish I could have stayed a little longer complementary drinks and friendly service overall great experience

Operator response

Thank you for your great review! We’re happy to hear you had a wonderful time snorkeling at Sombrero Reef and enjoyed the trip with the captain. It’s great to know you had fun in the water, appreciated the complimentary drinks, and experienced friendly service throughout the trip. Sombrero Reef is a beautiful spot, and we’re glad you were able to enjoy it. Thank you for joining us, and we hope to welcome you back again for another snorkeling adventure!

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