Silfra
No discussion about the best dive sites in Iceland would be complete without a mention of Silfra. It is hands down the best dive site in Iceland. The Silfra fissure is located within the Pingvellir National Park, which is approximately 45 minutes away from Reykjavik.
Silfra is the only place in the world wherein you can dive two tectonic plates – one from Eurasia and the other from North America. This diving site offers depth of up to 100 meters with excellent visibility all year round. This diving site is filled with crystalline water that comes from the Langjokull Glacier. The water is also filtered by porous volcanic rock, which makes it very cold and pure.
Strytan
Strytan is another distinctive and unique dive site in Iceland. It is known as the only dive site in the world that is situated right next to a hydrothermal vent – typically located miles down into the ocean. Big Strytan is only about 60 meters deep while Little Strytan is 26 meters deep.
There are geothermal cones in the area that vents fresh water that are rich in dissolved minerals. These cones continue to grow as the vent water keeps depositing minerals to the walls of the vent. There is a surprising amount of marine life in this dive site that include wolfish, starfish, clams, and nudibranch. You can also spot different species of jellyfish, cods, and humpback whale (if you’re lucky).
Gardur
This is a shore dive located near the Keflavik International Airport. It is a fantastic dive that offers a rich variety of colorful algae species, which becomes a source of food for the marine life. It is also a great diving destination for macro diving enthusiasts. This is a relatively shallow dive with a maximum depth of 18 meters.
Kleifarvatn Lake
The Kleifarvatn Lake is a dive site located about 30 minutes to the south of Iceland’s capital. It is a spectacular dive with a landscape that is reminiscent to that of the moon’s surface. The landscape and topography outside of the lake is largely similar to what you will uncover underneath the water surface.
Among the highlights of your dive is a cratered area that is about 10 meters deep. This cratered area results in a continuous stream of bubbles that emit the smell of hydrogen sulfide and sulfur gases. You will also find deep craters with overhanging walls with bubbles coming out of them. During the summer, the lake can be as hot as 14 degrees Celsius but diving in a drysuit is still recommended.
SS El Grillo
This is a British oil tanker that sank during World War II after it was attacked by the German fighter planes. This wreck lies 45 meters deep on the seabed. The highest point of the wreck is at 28 meters below the water surface. The ship itself measures 500 meters long and is big enough to require multiple dives.
Due to the depth of this dive, a diving training certification is required. A drysuit certification is also required here.