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Swim among geothermal vents on the Reykjanes Peninsula: a guided snorkeling tour that pairs a walk through Seltún’s boiling mud pots with a dry-suit snorkel near Kleifarvatn. Expect warm pockets, mineral formations and hot chocolate afterward.
Swim among geothermal vents on the Reykjanes Peninsula: a guided snorkeling tour that pairs a walk through Seltún’s boiling mud pots with a dry-suit snorkel near Kleifarvatn. Expect warm pockets, mineral formations and hot chocolate afterward.
You start on cool earth beside Seltún, steam coiling like a living thing from boiling mud pots as gulls wheel above.
The guide outlines the route through the boardwalks, then you drive a short self-guided leg to Kleifarvatn where the lake’s surface hides a strange, effervescent world below.
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Operated by DIVE.IS - The Sport Diving School of Iceland · Grindavík, Southern Peninsula
You start on cool earth beside Seltún, steam coiling like a living thing from boiling mud pots as gulls wheel above.
The guide outlines the route through the boardwalks, then you drive a short self-guided leg to Kleifarvatn where the lake’s surface hides a strange, effervescent world below.
The Reykjanes Peninsula is young geology in motion: the Mid-Atlantic Ridge runs underfoot, cracking basalt and feeding fumaroles that have shaped local routes and settlements for centuries. Seltún’s ochre and sulfur-streaked ground tells that story—the visible side of a vast subsurface plumbing system.
In the water, geothermal vents change the rules. Sediments ripple and warm pockets rise like champagne bubbles; the dry suit keeps you buoyant and insulated as you peer at mineral chimneys and thermally altered algae. Local guides explain how communities historically used geothermal heat for bathing and food drying, and how modern Icelanders balance access with protection.
Practical essentials: this is a two-hour activity that requires moderate fitness and confident swimming. Operators provide dry suits, masks and briefings; you must meet age, height and medical requirements and complete a consent form. Dress under your dry suit in thermal base layers and wear wool or synthetic socks. Expect constriction in the suit and plan a warm change of clothes and a heated vehicle for the drive back.
The tour finishes with hot chocolate and cookies—an intentional warm note after a uniquely Icelandic underwater encounter. Timing, kit, and clear communication with the operator make this both safe and unforgettable.
Participants must be at least 12 years old; heights and weights are restricted and must be provided to the operator.
No prior snorkeling experience is required, but you must be comfortable in the water and able to swim; guides provide instruction and briefings.
The operator may cancel for unsafe conditions and offers a full refund if cancelled at least 24 hours prior; dress for wind and cold even if the swim is sheltered.
Yes—dry suits are provided but can feel tight; bring the recommended base layers and expect some restriction in movement.
DIVE.IS - The Sport Diving School of Iceland operates guided outdoor trips and adventures with an emphasis on safety, stewardship, and memorable experiences.
You start on cool earth beside Seltún, steam coiling like a living thing from boiling mud pots as gulls wheel above.
The guide outlines the route through the boardwalks, then you drive a short self-guided leg to Kleifarvatn where the lake’s surface hides a strange, effervescent world below.
You start on cool earth beside Seltún, steam coiling like a living thing from boiling mud pots as gulls wheel above.
The guide outlines the route through the boardwalks, then you drive a short self-guided leg to Kleifarvatn where the lake’s surface hides a strange, effervescent world below.
The Reykjanes Peninsula is young geology in motion: the Mid-Atlantic Ridge runs underfoot, cracking basalt and feeding fumaroles that have shaped local routes and settlements for centuries. Seltún’s ochre and sulfur-streaked ground tells that story—the visible side of a vast subsurface plumbing system.
In the water, geothermal vents change the rules. Sediments ripple and warm pockets rise like champagne bubbles; the dry suit keeps you buoyant and insulated as you peer at mineral chimneys and thermally altered algae. Local guides explain how communities historically used geothermal heat for bathing and food drying, and how modern Icelanders balance access with protection.
Practical essentials: this is a two-hour activity that requires moderate fitness and confident swimming. Operators provide dry suits, masks and briefings; you must meet age, height and medical requirements and complete a consent form. Dress under your dry suit in thermal base layers and wear wool or synthetic socks. Expect constriction in the suit and plan a warm change of clothes and a heated vehicle for the drive back.
The tour finishes with hot chocolate and cookies—an intentional warm note after a uniquely Icelandic underwater encounter. Timing, kit, and clear communication with the operator make this both safe and unforgettable.