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Ocean Calling

Ocean Atlas · Europe and Mediterranean

Europe and Mediterranean

Denmark

Little Belt is one of the densest harbour porpoise areas in the world. Shared as a story only, with no trips.

Harbour porpoise
Harbour porpoise, found in the waters of the wider region · Photo: Simon Tonge, iNaturalist, cc0
Story only

Story only, for now. We love learning about this place and its ocean, so we share its story here and do not sell trips yet. Checked by Ocean Calling on 6 Oct 2026. Sources: Harbour porpoise protection guidelines for motorboat drivers in Lillebaelt, Boote Magazin; Explainer on porpoises, University of Southern Denmark; Foreign travel advice Denmark, UK FCDO.

Why: Harbour porpoises live in Danish waters, including about 14,000 to 16,000 in the inner Belt Sea around the Little Belt. Lillebælt Nature Park, with Aarhus University research, asks boat drivers to keep at least 50 m from porpoises and 200 m if a calf is with them, slow to 5 knots within 300 m, switch off echo sounders, never chase and never split mothers from calves. We would only watch from a boat that follows these guidelines, from a respectful distance, never feeding or approaching.

🧭 Travel advice, checked 30 Sep 2026. The UK FCDO travel advice for Denmark, which also covers the Faroe Islands and Greenland, was last updated on 11 August 2026 with information on the European Entry-Exit System. Sources: UK FCDO travel advice, Denmark Advice differs by passport: check your own government before you plan.

Wildlife watching

Why Denmark

The Little Belt, between Funen and Jutland, is often described as one of the densest harbour porpoise areas in the world, and porpoises live there all year. Harbour seals and grey seals rest on sandbanks at places like Anholt and Laeso, and Atlantic bluefin tuna have returned to the Oresund. The water is cold and the rules are strict, with at least 50 m distance from marine mammals. We see this as a watch-only story and we do not go.

Conservation-led. Ocean Calling guests never chase, touch or bait animals.

KazakhstanRussiaNorwayGreenlandFranceIranArmeniaSwedenBelarusUkrainePolandAustriaHungaryMoldovaRomaniaLithuaniaLatviaEstoniaGermanyBulgariaGreeceTurkeyAlbaniaCroatiaSwitzerlandLuxembourgBelgiumNetherlandsPortugalSpainIrelandItalyDenmarkUnited KingdomIcelandAzerbaijanGeorgiaSloveniaFinlandSlovakiaCzechiaBosnia and Herz.MacedoniaSerbiaMontenegroKosovoLittle Belt, DenmarkOresund near Helsingor, Denmark

When to go

Timing changes a lot from place to place. See each place below.

We share this place as a story so you can learn. There is no Ocean Calling trip.

Our ethics check

Can we travel here ethically?

Story only

We tell the story. We do not sell a trip here.

Checked 6 Oct 2026. Places change, so we look again every year.

Sources for this check
The story

Where in Denmark

We share these places as stories and research notes. We do not offer or sell trips here.

Little Belt

Story only

A narrow strait with strong current, known for very many harbour porpoises.

Also seen: Harbour porpoises (from a boat, at least 50 m away, never certain)

When: Year-round. Harbour porpoises live in the Little Belt all year, and the guidance is to keep a respectful distance from a quiet boat. Sightings are never promised.

Oresund near Helsingor

Story only

A busy strait where Atlantic bluefin tuna have come back.

Also seen: Atlantic bluefin tuna (from a boat), Harbour porpoises (never certain)

Animals

Animals recorded in Denmark

Tap an animal to learn how it lives, where it travels and how to meet it respectfully.

Land animals
Harbour porpoise rolling at the surface off Berry Head, DevonHarbour porpoisePhocoena phocoenaSeen in 20 countries in the AtlasLeast ConcernSpotted harbor seal lifting its head out of calm waterHarbor sealPhoca vitulinaSeen in 13 countries in the AtlasLeast ConcernGrey seal resting on a seaweed rock in Northumberland, UKGrey sealHalichoerus grypusSeen in 13 countries in the AtlasLeast ConcernCommon bottlenose dolphin swimming over a seagrass bedCommon bottlenose dolphinTursiops truncatusSeen in 89 countries in the AtlasLeast ConcernAtlantic bluefin tuna leaping out of choppy water, recorded in Hovedstaden, DenmarkAtlantic bluefin tunaThunnus thynnusSeen in 39 countries in the AtlasLeast ConcernHumpback whale swimming close with long pectoral finHumpback whaleMegaptera novaeangliaeSeen in 87 countries in the AtlasLeast ConcernSperm whale mother raising her fluke beside her calf off DominicaSperm whalePhyseter macrocephalusSeen in 114 countries in the AtlasVulnerableLoggerhead turtle at the surface feeding on Portuguese man o' warLoggerhead turtleCaretta carettaSeen in 89 countries in the AtlasVulnerableOrcas surfacing close together in calm Arctic Norwegian watersOrca (killer whale)Orcinus orcaSeen in 55 countries in the AtlasData DeficientPod of common dolphins surfacing in calm blue seaCommon dolphinDelphinus delphisSeen in 53 countries in the AtlasLeast ConcernFin whale surfacing, showing its white right lower jawFin whaleBalaenoptera physalusSeen in 37 countries in the AtlasVulnerableBump-head sunfish swimming in blue water off Nusa PenidaOcean sunfish (mola)Mola molaSeen in 29 countries in the AtlasVulnerableMinke whale surfacing and exhaling, seen from aboveCommon minke whale (North Atlantic)Balaenoptera acutorostrataSeen in 30 countries in the AtlasLeast ConcernTwo long-finned pilot whales surfacing side by sideLong-finned pilot whaleGlobicephala melasSeen in 24 countries in the AtlasLeast ConcernScarred Risso's dolphin spyhopping out of the waterRisso's dolphinGrampus griseusSeen in 56 countries in the AtlasLeast ConcernSei whale's tall dorsal fin breaking a calm sea surfaceSei whaleBalaenoptera borealisSeen in 24 countries in the AtlasEndangeredDwarf minke whaleBalaenoptera acutorostrata (dwarf form)Seen in 30 countries in the AtlasLeast ConcernWild beluga lifting its head from the brown water near Churchill, ManitobaBeluga whaleDelphinapterus leucasSeen in 10 countries in the AtlasLeast ConcernOceanic whitetip shark with pilot fish in sunlit Red Sea waterOceanic whitetip sharkCarcharhinus longimanusSeen in 43 countries in the AtlasCritically EndangeredSilky shark swimming near the surface in blue waterSilky sharkCarcharhinus falciformisSeen in 48 countries in the AtlasVulnerableBasking shark swimming underwater in green water off Argyll, ScotlandBasking sharkCetorhinus maximusSeen in 23 countries in the AtlasEndangeredBowhead whale head with twin blowholes breaking the surfaceBowhead whaleBalaena mysticetusSeen in 8 countries in the AtlasLeast ConcernLion's mane jellyfish with long hair-like tentacles, Highland, ScotlandLion's mane jellyfishCyanea capillataSeen in 13 countries in the AtlasNot EvaluatedMoon jellyfish in a harbour in Zeeland, NetherlandsMoon jellyfishAurelia aurita and other Aurelia speciesSeen in 33 countries in the AtlasNot EvaluatedA male northern bottlenose whale lifting its head above the surface in the Gully, Nova Scotia, during a research expeditionNorthern bottlenose whaleHyperoodon ampullatusSeen in 15 countries in the AtlasNear ThreatenedShortfin mako shark at Condor Bank in the North Atlantic, AzoresShortfin makoIsurus oxyrinchusSeen in 40 countries in the AtlasEndangeredBlue shark swimming in open blue water off the Azores with a diver in the backgroundBlue sharkPrionace glaucaSeen in 50 countries in the AtlasNear ThreatenedAngelshark with a flat, mottled brown body swimming just above a sandy seabed in dark waterAngelsharkSquatina squatinaSeen in 14 countries in the AtlasCritically EndangeredA Black Sea seahorse in the shallow water at Eforie-SudLong-snouted seahorseHippocampus guttulatusSeen in 21 countries in the AtlasNear ThreatenedSpiny dogfish resting on the seabed at the Josephine Marie shipwreck, Stellwagen Bank National Marine SanctuarySpiny dogfishSqualus acanthiasSeen in 47 countries in the AtlasVulnerableAtlantic white-sided dolphin leaping clear of the sea, showing its pale flank stripeAtlantic white-sided dolphinLagenorhynchus acutusSeen in 12 countries in the AtlasLeast ConcernWhite-beaked dolphin surfacing, head and beak at the water lineWhite-beaked dolphinLagenorhynchus albirostrisSeen in 14 countries in the AtlasLeast ConcernAtlantic puffin spreading its wings on a cliff in IcelandAtlantic puffinFratercula arcticaSeen in 21 countries in the AtlasVulnerableAdult brown booby standing on a rock with its bill open against blue sky, PrincipeBrown boobySula leucogasterSeen in 104 countries in the AtlasLeast ConcernThree black-browed albatrosses with their bills together at a Steeple Jason Island colony, against blue skyBlack-browed albatrossThalassarche melanophrisSeen in 21 countries in the AtlasLeast ConcernA single silvery herring angled through deep blue water off Skjervoy, northern NorwayAtlantic herringClupea harengusSeen in 21 countries in the AtlasLeast ConcernWhite-tailed eagle in flight low over calm water with a fish in its talons, near Raftsund, Lofoten, NorwayWhite-tailed eagleHaliaeetus albicillaSeen in 38 countries in the AtlasLives on landLeast ConcernRinged seal lying on snow and ice, dark with pale ring markings on its backRinged sealPusa hispidaSeen in 13 countries in the AtlasLeast ConcernYoung hooded seal with a spotted coat lying on drifting sea iceHooded sealCystophora cristataSeen in 8 countries in the AtlasEndangeredHarp seal raising its head and chest out of green water with spray around itHarp sealPagophilus groenlandicusSeen in 10 countries in the AtlasNear ThreatenedGreenland shark swimming just above the seabed in deep water, filmed by a research vehicleGreenland sharkSomniosus microcephalusSeen in 8 countries in the AtlasVulnerableGreat cormorant perched on a branch, with white head plumes and a glossy blue-black backGreat cormorantPhalacrocorax carboSeen in 90 countries in the AtlasLeast ConcernHuge flock of sooty shearwaters flying low over the sea beside a rocky coastSooty shearwaterArdenna griseaSeen in 53 countries in the AtlasNear ThreatenedClose view of a northern gannet face, with pale blue eyes and a golden headNorthern gannetMorus bassanusSeen in 38 countries in the AtlasLeast ConcernScopoli's shearwater skimming just above calm blue waterScopoli's shearwaterCalonectris diomedeaSeen in 37 countries in the AtlasLeast ConcernLeach's storm-petrel in flight over water, wings spread, with a pale patch at the base of the tailLeach's storm-petrelHydrobates leucorhousSeen in 35 countries in the AtlasVulnerableManx shearwater banking just above the sea, white underparts and dark upperparts visibleManx shearwaterPuffinus puffinusSeen in 34 countries in the AtlasLeast ConcernGreat shearwater flying low over calm water, its reflection belowGreat shearwaterArdenna gravisSeen in 32 countries in the AtlasLeast ConcernEuropean shag sitting on its nest of dry grass, dark green-tinged plumage and yellow gapeEuropean shagGulosus aristotelisSeen in 31 countries in the AtlasLeast ConcernTwo pygmy cormorants perched on a bare branchPygmy cormorantMicrocarbo pygmaeusSeen in 26 countries in the AtlasLeast ConcernClose view of a small-spotted catshark head, with dark spots, resting on the seabedSmall-spotted catshark (lesser spotted dogfish)Scyliorhinus caniculaSeen in 25 countries in the AtlasLeast ConcernNorthern fulmar sitting on a cliff ledge, facing the cameraNorthern fulmarFulmarus glacialisSeen in 19 countries in the AtlasLeast ConcernVelvet belly lanternshark swimming just above a dark seabed, with a violet sheen along its flankVelvet belly lanternsharkEtmopterus spinaxSeen in 17 countries in the AtlasVulnerableThornback ray swimming over a rocky seabed in shallow green waterThornback rayRaja clavataSeen in 16 countries in the AtlasNear ThreatenedStarry ray resting on a sandy seabed, with a spotted back and thorns along the tailStarry ray (thorny skate)Amblyraja radiataSeen in 12 countries in the AtlasVulnerableTwo dark dorsal fins of porbeagle sharks cutting the sea surfacePorbeagleLamna nasusSeen in 11 countries in the AtlasVulnerableSpotted ray (homelyn ray)Raja montaguiSeen in 10 countries in the AtlasLeast ConcernBlonde ray resting on pebbles in a shallow rock poolBlonde rayRaja brachyuraSeen in 10 countries in the AtlasNear ThreatenedStarry smooth-houndMustelus asteriasSeen in 9 countries in the AtlasNear ThreatenedBlue skateDipturus batisSeen in 9 countries in the AtlasCritically Endangered
Curious?

Why this is a story, not a trip

Read our ethics check above. If you would like to talk about it, Rocío is happy to explain.

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