At the Maretarium you will get to know Finnish aquatic nature. Finland has 187,888 lakes, 25,000 km of rivers and 46,000 km of coastline of the Baltic Sea and its islands. About 60 native and permanent fish species live in Finnish waters. There are dozens of fish species that visit Finland’s sea area occasionally. You probably know perch, eel, pike, flounder and roach. But do you identify a roach from a rudd, a small whitefish from a vendace or a trout from a salmon? Do you know what kind of fish are gudgeon, chub, minnow or tench?
The world-renowned nature photography exhibition, Wildlife Photographer of the Year, opens at Maretarium on 1 July 2026 at 10 am. The exhibition is on
Maretarium has a unique population of eels born in 1976. This year, they will be 50 years old. There are ten 50-year-old eels in
The Nature Photographs of the Year 2025 exhibition will be on display at Maretarium from 1.11.2025 to 7.12.2025 and after a maintenance break from
Luontofilmi Itäisen Suomenlahden kansallispuisto
24.06.2026 11:00 - 11:15
Vesiputous kohisee karppialtaalla / Waterfall is running in the entrance hall
24.06.2026 13:00 - 13:05
Kalojen ruokintaa / Feeding of the fish
24.06.2026 15:00 - 15:15
Luontofilmi Saariston soutaja / Naturefilm "The Rower of the Islands"
24.06.2026 16:00 - 16:15
Luontofilmi Itäisen Suomenlahden kansallispuisto
25.06.2026 11:00 - 11:15
In Maretarium you will meet most of the Finnish fish species. For some species, you may see both as small juveniles and as old adults. The fish in Maretarium live according to the Finnish seasons. At certain times it is possible to see the fish spawnings. February is a spawning time for burbot, spring for pike, lamprey, ide, bream, perch and vimba bream, summer for three-spined stickleback and pikeperch, autumn for brown trout and Atlantic salmon. There are 22 fish tanks in Maretarium. In addition to fish, you can see e.g. grayfish and in the summer season also frogs.
Net Tickets are valid for 1 month from the date of purchase. Annual cards are valid for 12 months.
Note! Various cultural vouchers are NOT accepted by us as a means of payment.
You can book a guided tour for your group. Please send an email at least one week before to info@maretarium.fi. Declare the desired visiting date and size of the group in your mail.
1 – 20 persons, duration 1 hour, 75,00 €/group
21 – 50 persons, duration 1/2 hour, 75,00 €/group.
The aquarium tour takes about one hour and fifteen minutes. In the meantime you can pop in at Merisydän Cafe to have some refreshments. After the tour, we recommend a visit to our souvenir shop Meripuoti. Welcome!
Maretarium operates in accordance with the principles of sustainable tourism and is a suitable tourist destination for the whole family.
Aisti meren läheisyys ja nauti ajasta syöden, juhlien tai yöpyen vain 750 m päässä Maretariumista.
Upeiden näyttelyiden ja tapahtumien myötä pääsee kokemaan uskomattomia tarinoita niin mereltä kuin lähiseudultakin, vain reilun 1 km päässä Maretariumista.
Koe ainutlaatuisessa kohteessa historian havinaa keisarillisella kalastusmajalla, Langinkosken luonnonkauniissa ympäristössä.
Maretariumin song
(in Finnish)
By Maretarium
