Dive-site story
Silfra is a tectonic fissure located within Thingvellir National Park, formed by the divergent drift of the North American and Eurasian plates. Subterranean glacial meltwater filters through porous basalt lava rock over decades before emerging into the fissure, creating phenomenal water clarity with a distinct deep blue hue. The dive route guides you through distinct sections known as the Big Crack, the Hall, the Cathedral, and the shallow Lagoon.
Floating between the exposed continental plates of North America and Eurasia
Exceptional water clarity created by decades of natural basalt filtration
Stunning geological formations, sheer rock walls, and the wide Silfra Cathedral
Florescent green freshwater algae blanket known locally as troll hair
Location
Use the map to plan with your operator and confirm the exact entry point on the day.
Seasonality
Water temperatures remain near freezing throughout the entire year, but summer months offer longer daylight and easier outdoor staging.
Marine life
| Species | Likelihood | J | F | M | A | M | J | J | A | S | O | N | D |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Troll Hair AlgaeTetraspora cylindrica | Common | ||||||||||||
| Arctic CharrSalvelinus alpinus | Rare | ||||||||||||
| Freshwater amphipodGammarus lacustris | Rare |
Marine forecast
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