Available languages
3 hours
Mobile ticket
Snorkel in between two continents at one of the top diving sites in the planet! Silfra is located in Iceland’s National Park, Thingvellir. It is a fissure that was formed by the divergent tectonic drift of the Eurasian and North American plates.
What makes Silfra exceptionally unique is not only its geological significance, but it is also world-renowned for its crystal clear, fresh glacial water. This is constantly fed with a steady stream of 100m+ visibility drinkable water that creates the unique bio-diversity in this fissure.
We are the only operator in Silfra offering both drysuit and wetsuit together. This means multiple people in your group can book their preferred option.
We include photos as standard so you don't have the hassle of handling your own camera, but you are welcome to bring one! Our guides have all been doing this for years and know the best spots to take pictures of you and your group.
Not recommended for pregnant travelers
Not recommended for travelers with poor cardiovascular health
Not recommended for travelers with spinal injuries
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)
We recommend wearing long thermal underwear and thick wool socks a a base layer under the drysuit
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
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 right after booking the experience to be sure if you qualify.
Please dress according to weather - no heals or jeans
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.
Meet us at Thingvellir National Park, about 50 km from Reykjavik. Once you have met your PADI divemaster certified guide, he or she will be going through the procedure and safety measures of your tour. After, you will put on your gear and head to an exotic underwater canyon/fissure, Silfra, created as the continental plates drift apart at a rate of about 2 cm per year. Silfra is a freshwater fissure where you can see at least 100 meters ahead of you. The water here is so clear and pristine it feels like flying. The approximate time in the water is around 40 minutes. Before leaving you'll have a delicious hot chocolate prepared by your guide for the day. We do have the option to pre-book a wetsuit on another listing. Booking a wetsuit is recommended for people who want to have the chance to dive down or who are scuba divers without the required certifications for the scuba dive. For the wetsuit it is recommended that you are a confident swimmer, if you are not then the drysuit is best for you. To cater to everyone's desires we are the only company that has wetsuits and drysuits allowing them to be in the same group.
Underwater photos
Use of Snorkelling equipment
PADI Divemaster/ Instructor or equivalent
Hot chocolate
Clothing suitable for the weather, like waterproof items
Food
Snorkel between continents: Experience the magic of Silfra fissure, where you float between tectonic plates in the world’s clearest water!
Snorkel between continents: Experience the magic of Silfra fissure, where you float between tectonic plates in the world’s clearest water!
snorkeling
Snorkel between continents: Experience the magic of Silfra fissure, where you float between tectonic plates in the world’s clearest water!
Snorkel between continents: Experience the magic of Silfra fissure, where you float between tectonic plates in the world’s clearest water!
Snorkel between continents: Experience the magic of Silfra fissure, where you float between tectonic plates in the world’s clearest water!
1,317 reviews
Total reviews and rating from Viator & Tripadvisor
markeV7699MY,Apr 15, 2026
- Review from Tripadvisor
Dory was amazing, she made it so fun for my son and I

F6536LBdonnab,Apr 15, 2026
- Review from Tripadvisor
I had a great time snorkelling with my two daughters at the the Silfra fissure at the Thingvellir National Park. We had the best instructor in Nebo who was fantastic : calm, knowledgeable, confident but also made it fun! He took some great photos of us! The whole process was really well organised and smooth. We loved the gorge, clear waters and I would highly recommend Adventure Vikings if you’re looking to do something a bit more adventurous on your trip!



mary s,Apr 14, 2026
- Review from Viator
the water was crystal clear and inviting although it was in early spring and it was cold. They provide you with all the gear needed and the experience ends with a cup of hot chocolate! An experience you shouldn’t miss!
SurreyRitz,Apr 8, 2026
- Review from Tripadvisor
Dory was absolutely brilliant. An excellent guide who knew exactly what she was doing. We felt we were in very capable hands throughout.
annarA1385UY,Apr 3, 2026
- Review from Tripadvisor
Our guide Dori was great and the tour is amazing
adsonh2026,Apr 3, 2026
- Review from Tripadvisor
Amazing experience, Dory (the instructor) made it feel even more amazing, kudos to her. Definitely needs a raise and as many beers as she can get.
megcK3340FM,Apr 2, 2026
- Review from Tripadvisor
We booked this at the last minute and we are so glad we did. It was snowing so the drive was a little tricky, just know you need to go through a mountain pass to get there from Reykjavik -- give yourself lots of extra time to navigate through the weather. Grétar was an excellent guide. Super patient and kind. He took the time to get good photos of us at the beginning, during, and at the end. We wore two pairs of socks and a thermal layer and were not cold, even as it snowed all around us. The water soaks through the gloves and the hood but it wasn't uncomfortable. The experience is truly incredible and we were pretty tired at the end, mostly from the constriction of the suit more than anything else. Highly recommend as a once in a lifetime experience!
jessicasR2452TN,Mar 30, 2026
- Review from Tripadvisor
Dory was amazing! Very knowledgeable and nice.
verynoisy,Mar 24, 2026
- Review from Tripadvisor
Loved this experience - so unique. Our guide Doris was super knowledgeable and made us feel comfortable even in the cold water!





jefftM8756FR,Mar 17, 2026
- Review from Tripadvisor
Our guide Dory made the whole experience great. Good eye for detail, efficient tourguide and great underwater photo's. Recommended!
Operated by Adventure Vikings