Available languages
5 hours
Mobile ticket
Snorkeling in a fissure caused by two tectonic plates drifting apart is something you can't do everyday! Silfra is the name of a big 'crack' stretching parallel to the North American and a micro-plate called Hreppar that broken off from the Eurasian plate.
Silfra has world-renowned clear and drinkable water with over 100 metre visibility daily. This is unlike any tour you can do in Iceland and is something you can't do anywhere else in the world.
We are the only company to offer wetsuit and drysuit. This means members of your group can book different options and still be together in the water.
We include photos and usually take around 40-100 photos as standard depending on the size of the tour and you will be able to download them after at least a few days.
We always have small groups, 6 people per guide. This allows for a better and more personal feel. If you have a group of 7 or more you can be together preparing your equipment but in the water some of you will be separate.
Not recommended for travelers with spinal injuries
Not recommended for travelers with poor cardiovascular health
Not recommended for pregnant travelers
Suitable for all physical fitness levels
All participants must know how to swim and be comfortable in water
All participants must be able to communicate in English
Please note that that dry suits can sometimes feel quite tight and constricting, especially around the neck and wrists
Minimum age is 12 years, please reach out regarding younger participants & Participants over the age of 65 need to get a physicians approval
Be at minimum 150cm (4’9) tall / maximum 200cm (6’7) tall, and be at minimum 50kg (99 lbs) / maximum 120kg (264 lbs)
Don't wear glasses, instead bring contact lenses or your own prescription mask (if you have one)
Recommended to bring a change of clothes (the drysuit has a very small chance of leaking)
All participants will need to fill out a medical form before participating in the tour - http://adventurevikings.is/wp-content/forms/SNORKELING%20SILFRA%20MEDICAL%20STATEMENT%202023.pdf
All participants heights, weights and age must be provided to local operator. If you do not provide at time of booking, please contact supplier immediately after booking to provide this information
We recommend wearing long thermal underwear and thick wool socks a a base layer under the drysuit.
Please dress according to weather - no heals or jeans
All participants will need to fill out a medical form before participating in the tour. Please find a link to the medical statement on your ticket voucher.
Note: Each guide can assist one group of up to six participants at a time. Up to three different groups can be present during this activity.
Make sure to eat breakfast before this activity
Not recommended for people with claustrophobia (Wetsuit can be a better option if you are)
For a full refund, cancel at least 24 hours before the scheduled departure time.
Underwater photos
Use of Snorkelling equipment
Pick up and drop off in Reykjavik
PADI Divemaster/ Instructor or equivalent
Hot chocolate
Food
Clothing suitable for the weather, for example waterproofs
Select a pickup point
The location of Silfra, where the snorkeling takes place, is within Thingvellir National park. Passengers, while driving through, get a chance to view some of the beautiful nature the national park has to offer.
Heading out from your Reykjavík accommodation to Silfra takes about 45 minutes. After greeting your certified guide upon arrival, you'll gear up, listen to a safety overview, and head into the glacially flooded fissure known as Silfra. You'll spend around 30–40 minutes in the water before exiting and walking back around 5 minutes walk. You'll then get a chance of warming up with a well earned hot chocolate. We’ll take photos during the snorkeling. Typically 40–100 images, depending on group size and skill level. The photos will be available for download a few days later free of charge. For the drysuit option, Please bring your own one thermal base-layer. We recommend bringing thick (preferably wool) socks to help keep your feet warm while snorkeling. We’re the only company offering both wetsuit and drysuit options. This means members of your group can book in wetsuits or drysuits and you will still be in the same group in the water.
Reykjavik Pick up and return
Pickup included
Reykjavik Pick up & return
Pickup included
614 reviews
Total reviews and rating from Viator & Tripadvisor
gobbiest1,
Dec 5, 2025
- Review from Tripadvisor
This is literally a once in a lifetime experience. Your safety is paramount to the guide (Gretar was ours) and whilst I felt a bit scared at the beginning, I knew the group was in the safest of hands. Yes, it’s cold but the dry suits keep you 99% dry - you just may have some water in your gloves, I did. We spent about 35 minutes snorkelling and even saw some fish! Gretar is a proud Icelander and rightfully so, it’s a beautiful country. He even taught us about the historical importance of where we were and it was a pleasure to learn about it. Well done, Gretar!






Claire N,
Dec 5, 2025
- Review from Viator
Gretar was a great guide. Very unique and beautiful experience. Really clear water and easy fun thing to do. The suits seemed a bit uncomfortable at first but you get used to it and they do keep you dry and warm. Highly recommend.
Navigator52770890283,
Nov 23, 2025
- Review from Tripadvisor
Snorkeling in Silfra was an amazing experience - HIGHLY RECOMMEND! Nebo was so patient with us when we struggled to find the pick-up location and called us to make sure we found each other. Dory was a wonderful guide during the snorkeling trip and made sure we were all comfortable and enjoying ourselves the whole time. The underwater views and the surrounding area are once in a lifetime. Don't miss this when you visit Iceland!
vibhushas2020,
Nov 23, 2025
- Review from Tripadvisor
Such a surreal experience! It was my first time Snorkelling but damn it was worth it. Dory was such a professional, she knew everything and is quite experienced and will put you on ease, teach if you don’t know how to do it. It was amazing but freezing!

Gareth R,
Nov 22, 2025
- Review from Tripadvisor
I had such an amazing and unique experience and would highly recommend this to anybody. It was well planned and my guide Dori was very professional and informative. Do it . You wont regret it👍👍
X9865HYjamiee,
Nov 15, 2025
- Review from Tripadvisor
Dory was incredible. It was chilly but totally worth it. The water was extremely clear and we saw a trout, which was apparently very rare! Highly recommend.
sorenh593,
Nov 15, 2025
- Review from Tripadvisor
It was an amazing experience. It was -4c in the air so a bit cold during the readying process but boy what an award 😎😎. Pickup and drop off worked great. Thanks to the team!

Jennifer G,
Nov 12, 2025
- Review from Tripadvisor
Dory was great! Very professional, clear and very experienced helping everyone with their gear! Dory was calm too which helped when nervous about the cold! Her hot chocolates were great too ;) thanks Dory!
Rebecca T,
Nov 10, 2025
- Review from Viator
It really is a unique experience and it was fantastic! Our instructor was so great and we all felt super clear on what was going to happen. I think his name was Arnel, but he made a joke about the name Arnold so we will stick with that. 5 star guide! Follow all the advice thermals, double socks and warm clothes to wear afterwards and you’ll be fine. If you think about it take off all jewellery, watches, etc and take a tie for long hair. It really was incredible so do it
Kieran B,
Nov 3, 2025
- Review from Tripadvisor
Had a great experience and she helped calm us and talked us through everything clearly. Our first time snorkelling was made amazing thanks to her.
Operated by Adventure Vikings