WILDLIFE
Wildlife at Jökulsárlón: Seals, Terns and Skuas
Seals on the icebergs year-round, Arctic terns and skuas through summer: what wildlife you can hope to see at the glacier lagoon, and the best season for each.
Check dates and availability ↗Seals on the icebergs
The animals most visitors come hoping to see are seals, and Jökulsárlón is one of the more dependable places in Iceland to find them. Both harbour seals and grey seals use the lagoon, hauling out to rest on floating icebergs and threading between the bergs as they swim. They're present year-round and — unusually — they gather here in real numbers in winter, when many other wildlife sightings dry up. Nothing wild is ever guaranteed on a given day, but the odds here are genuinely good. Bring binoculars or a long lens: the seals often lie some distance out on the ice, and a pale seal on white ice is easy to miss until it lifts its head and moves.
Why the seals are here: fish on the tide
The seals aren't sightseeing — they're feeding, and the reason ties straight back to the lagoon's link with the sea. Because Jökulsárlón is tidal and brackish, each flood tide carries seawater and fish in through the channel: herring, along with trout and salmon moving between river and ocean. That regular delivery of food is what makes the lagoon such reliable seal habitat, and it's why you'll often see them concentrated near the outlet where the current runs. Understanding that also explains the rhythm of a visit — activity tends to pick up around the tides, so if the lagoon looks quiet, it may simply be the wrong part of the cycle rather than a bad wildlife day.
Terns, skuas and the summer birds
In summer the sands around the lagoon — the broad outwash plain of Breiðamerkursandur — come alive with birds. Arctic terns nest here in numbers, having flown an astonishing annual migration from near Antarctica, and they defend their nests fiercely; walk too near and they will dive at your head, so give nesting areas a wide berth. Arctic skuas patrol the same ground, piratical birds that harry others into dropping their catch, and you may spot great skuas alongside various gulls and waders working the shoreline. It's a seasonal spectacle: the terns arrive in late spring and are gone again by late summer, so the birdlife peaks roughly May through August and empties out afterward.
Winter: fewer birds, more seals
Winter flips the wildlife balance. The migratory birds have long gone and the sands fall quiet — but the seals more than compensate, gathering on and around the ice in larger numbers than at any other time of year. Against a low winter sun and blue ice, a lagoon dotted with resting seals is one of the season's quieter rewards, and with far fewer visitors around you often have the shoreline nearly to yourself. The catch is the same one that shapes every winter visit here: only four to five hours of usable daylight in December, and a demanding drive to reach the place. But for wildlife specifically, winter is not the off-season it might first appear to be.
Watching without disturbing
A few simple habits keep the wildlife wild and keep you out of trouble. Keep your distance from seals hauled out on the ice — if an animal lifts its head and watches you, you're already too close, and a stressed seal wastes energy fleeing that it needs for feeding. Never try to reach a seal on an iceberg; the bergs roll without warning and the water is lethally cold. In summer, stay well clear of nesting terns and skuas, both for the birds' sake and your own scalp. Bring optics rather than trying to close the gap on foot. Nothing here is fed or tame; the whole appeal is that these are genuinely wild animals in a wild place.
Beyond the lagoon
The wider region rewards a wildlife eye too. Wild reindeer roam the highlands and valleys of south-east Iceland — descendants of eighteenth-century imports — and are sometimes seen from the Ring Road, more often in winter when they move down to lower ground. Out at sea off nearby Höfn, boat trips run in summer with chances of seals, seabirds and occasionally whales, though sightings vary a great deal. And the whole coast is prime seabird country in the warmer months. None of this is guaranteed, and Jökulsárlón itself remains the reliable draw for seals and, in season, terns. But if you're building a longer trip through the area, keep binoculars within reach the entire way.