3.6.2024 - 18.8.2024

every day
except 21.6.


every day
except 21.6.

19.8. - 8.12.2024




Welcome to the underwater world of Finnish fish at Maretarium!

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?

Latest News

Perch in the Baltic Sea Tank.

Maretarium is open also at Midsummer

Maretarium and Maretarium’s souvenir shop Meripuoti are open every day also during Midsummer. On Midsummer’s Eve 21.6., however, only from 10 am to 2


  • Luontofilmi Itäisen Suomenlahden kansallispuisto, kesto 15 min.

    18.07.2024  11:00 - 11:15

  • Vesiputous kohisee karppialtaalla / Waterfall is running in the entrance hall

    18.07.2024  13:00 - 13:15

  • Hanna Hauki tervehtii lapsia / Hanna The Pike meets children

    18.07.2024  14:00 - 14:10

  • Kalojen ruokintaa / Feeding of the fish

    18.07.2024  15:00 - 15:15

  • Luontofilmi Saariston soutaja / The Rower of the Islands, kesto 15 min

    18.07.2024  16:00 - 16:15

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.

Ticket prices from these net pages

Free entry
Children under 3 years
Dogs (valid only 1.-30.11.2023)
Cats (valid only 1.-3.12.2023)
Children under 3 years
Free entry
Dogs (valid 1.-30.11.2023)
Cats (valid 1.-3.12.2023)

Net Tickets are valid for 1 month from the date of purchase. Annual cards are valid for 12 months.

For groups of more than 15 people, the group leader and bus driver are free of charge.

Note! Various cultural vouchers are NOT accepted by us as a means of payment.

Book a Guided Tour

You can book a guided tour for your group. Please send an email at least one week before to Declare the desired visiting date and size of the group in your mail.

1 – 20 persons, duration 1 hour, 65,00 €/group
21 – 50 persons, duration 1/2 hour, 65,00 €/group.

Our other services

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!

A responsible tourist destination

Maretarium operates in accordance with the principles of sustainable tourism and is a responsible tourist destination for the whole family.

Maretarium recommends

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