Opening hours 17.2.-6.6.2021



every day
except 25.6.


every day




  • Please follow good hand hygiene. Come visit with clean hands, wash your hands when you come in and use hand sanitizer.
  • We recommend wearing a face mask.
  • Avoid unnecessary touching of surfaces.
  • Keep a safety distance of 2 meters for other groups, and when your own group stays together, it makes it easier for others to keep a safe distance from your group.
  • You can buy your ticket in advance. If you buy your ticket on site, we recommend a card deposit.
  • The aquarium is marked with a direction of rotation, which we recommend following.
  • We are allowed to have only 10 persons on the aquarium tour at the same time.

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

Muumi uimassa #meidänmeri

We have only one sea #OURSEA

Maretarium is a partner of #OURSEA, a charity campaign launched by Moomin Characters to celebrate the 75-year anniversary of Tove Jansson publishing her first


  • Luontofilmi Itäisen Suomenlahden kansallispuisto / Naturefilm of the Eastern Gulf of Finland Nationalpark

    04.03.2021  11:00 - 11:15

  • Kalojen ruokinta / Feeding of the fish

    04.03.2021  15:00 - 15:15

  • Luontofilmi Itäisen Suomenlahden kansallispuisto / Naturefilm of the Gulf of Finland Nationalpark

    04.03.2021  16:00 - 16:15

  • Luontofilmi Itäisen Suomenlahden kansallispuisto / Naturefilm of the Eastern Gulf of Finland Nationalpark

    05.03.2021  11:00 - 11:15

  • Kalojen ruokinta / Feeding of the fish

    05.03.2021  15:00 - 15:15

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

Free entry
Children under 3 years
Children under 3 years and special group assistants
Free entry

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

For groups of more than 20 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 Meri Café Kristina 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