In Iceland's Westfjords, cold Greenland water meets the Atlantic and kelp forests thrive under seabird cliffs. A guide to the country's wildest fjord coasts.
The first thing to understand about Iceland's Westfjords is that the road ends in a question mark. This is the region that the Ring Road, Iceland's famous circumference, skips entirely — a great gnarled hand of mountains jutting northwest into the Atlantic, its fjords so deep and ramifying that the coastline measures some 2,500 kilometres against a resident population you could fit in a sports arena. From the tabletop moors of the central Strandir coast to the sand of the south-facing beaches at Rauðasandur, and across the rampart of Látrabjarg's bird cliffs at Europe's westernmost point, the Westfjords are the quietest, steepest, birdniest corner of a country already oversupplied with quiet, steep and birdy corners. And in the green-lit water below all of it grows some of the finest kelp habitat in the North Atlantic.
The Westfjords are old — the basalts here are among Iceland's most ancient rocks, layered flows of 12 to 16 million years ago, long predating the active rift valleys of the south. Ice-age glaciers ground the plateau into its modern hand-shape, excavating deep troughs that flooded as the ice left; the result is a chain of fjords — Ísafjarðardjúp the great inner basin, Jökulfirðir the glacier fjords beneath Hornstrandir's cliffs, and dozens of smaller arms slicing between them. Read the underlying mechanics in our explainer on how fjords form — deep water behind a sill, and all the strange layering that implies for the water column.
Oceanographically the region sits at a meeting point. The East Icelandic Current carries cold, fresh polar water around the north coast from Greenland, while the warmer, saltier Irminger branch of the North Atlantic Current presses up from the south. The Westfjords sit in the mixing zone, and the result is productive water: rich, clear, and cold, usually 3–8°C through summer with winter dipping close to freezing at the surface in the innermost fjords. That soup — and the dark basalt that gives kelp's holdfast endless cracks to grip — makes the ideal forest floor.
Dive or snorkel a Westfjords wall and you meet the classic boreal Iceland kelp community at its best:
The wildlife above the seaweed is the coast's real pageant. Harbour seals haul out on skerries and watch you with glassy reproach. The Arctic fox — Iceland's only land mammal and the region's emblem — hunts the shorelines and the edge of the kelp wrack. And overhead, the clamor is astonishing: Látrabjarg holds one of the largest seabird cliffs in the Atlantic, millions of puffins, razorbills, guillemots and fulmars diving and wheeling over water that is itself full of fish schooling in and around the kelp. The canopy and the cliff are one breathing system, top to bottom.
Settlement here was always cliff-edged — turf houses huddled against avalanche slopes, churches looking out to rowable sea. Saltfish built the region's early modern wealth; the herring of the twentieth century brought golden, hectic decades and then collapse, leaving a string of abandoned stations and the rusted hulk of Garðar BA 64, Iceland's oldest steel ship, beached as a monument at Patreksfjörður. Today the human economy hums on small-scale fisheries, increasingly on arctic char and salmon farming in the fjords, and on travellers drawn by Hornstrandir Nature Reserve — a peninsula so remote the only road ends at the mouth of its nearest fjord, and the rest is walking between bird-thronged headlands.
Kelp enters this human story in quiet ways. Icelanders harvested winged kelp for food; the wrack storm-piled on beaches composted fields; and today a new generation of seaweed entrepreneurs around Ísafjörður and the Strandir coast cultivates and harvests kelp for food and skincare in ways that rhyme with our own kelp harvesting work. The Westfjords is one of those rare working coasts where a new blue economy can nod to ancient uses while building something research-driven.
Iceland's kelp forests are not untouched by climate change — wrack surveys and monitor dives across the country have tracked changes in kelp abundance and community structure, and parts of the south and west coast warmer than the Westfjords have shown stress. But the Westfjords, supplied by the polar current, remain one of the island's most robust refuges, a cold cradle of high-value forest. This is precisely the logic behind treating such refuges as genetic conservation reservoirs — coastal reference populations from which the rest of a changing North Atlantic might be reseeded when the time is right, as we work through in kelp genetics and provenance. When Tidewright planned our Holdfast nursery protocols, cold-adapted northern-water populations like these were exactly the model for how resilient stock lines should be sourced.
The principal reality of visiting the Westfjords is patience: roads are long, gravel in places, and the region opens only fully from May to September, when Hornstrandir's hiking boats run from Ísafjörður.
Yes, but only in a drysuit and with organised guiding from Ísafjörður. Summer water is only a few degrees above freezing at depth; even the surface rarely exceeds 10°C, so this is specialist cold-water activity.
Under calm conditions, kelp blades lie visible through clear fjord water near shore, and after storms the wrack lines along beaches are thick with blades to examine. Kayaking and boat trips are the best surface-level window into the canopy.
Harbour seals, eider ducks, puffins, guillemots, gulls and shorebirds all forage in and over the kelp. Arctic foxes patrol the wrack line for carrion and shore-side hunting; orcas occasionally hunt seals in the outer fjords.
All Icelandic coasts are changing, but the Westfjords' cold current input buffers it relative to the warmer south. Monitoring continues, and the region's role as a thermal refuge is part of its growing scientific importance.
The south and west of Iceland sit closer to Atlantic warmth; the Westfjords' water is colder, more polar in character, and the forest is correspondingly denser and more purely boreal — with steep fjord walls taking the kelp habitat into deeper, often quite vertical, territory.
Coasts like the Westfjords show what a healthy cold-water forest can be, and why protecting the refuges matters as much as rebuilding the losses. See how Tidewright's restoration and monitoring platform turns such baselines into action, and visit the atlas for more regions.
Iceland sits on the Mid-Atlantic Ridge where warm and Arctic currents collide — and its kelp forests, dive sites and seaweed traditions are as strange and rich as its geology.
Tom Okafor ·
Inside the Arctic Circle, warm Atlantic water meets polar light cycles and grows some of Europe's richest kelp forests. A guide to Lofoten's underwater jungle.
Tom Okafor ·
Sea lochs, tidal sound races and a kelp-burning past: a guide to the kelp forests of Scotland's west coast and the Hebrides, and where the industry is heading next.
Dr. Mara Ellison ·