Scuba Season
Underwater reef at Silfra Fissure
Not surveyed

Silfra Fissure

Iceland · Thingvellir

Silfra is a fissure in Iceland's Thingvellir National Park where the North American and Eurasian tectonic plates pull apart. The water is glacial meltwater filtered through 50km of lava rock — so clear that visibility regularly exceeds 100m. It's a geological dive, not a marine life one.

How this reef is doing

ⓘ How we measure this

Reef state

Not surveyed

Live science signals for this reef are still being gathered.

Coral cover

Not surveyed

Fish life

Not surveyed

Heat

Not surveyed

Fishing

QuietBusy

Open to fishing, and the water is busy.

Open

Sources · Global Fishing Watch and reef gravity

What you will see

7 species across the dive sites here

Dive sites

What divers say

I've seen 30m visibility plenty of times. Silfra is the only place I've ever felt like there was no water in front of me.
— Guest review

Good to know

Drysuit cert mandatory

Bring your card and log. Operators will turn you away without it.

Water is 2–4°C

Hands and face will be cold. Bring a balaclava under your hood.

It's a national park

Strict no touch rules and limited slots. Book ahead.

Gear & getting wet

  • Basic kit

    • Mask and fins
    • BCD and regulator
    • 7mm wetsuit or drysuit · cold water
    • Dive computer

  • For specific sites

    • Drysuit · Silfra Fissure
    • Hood · Silfra Fissure
    • Computer · Silfra Fissure