What is baltic sea day?

The goal of Baltic Sea Day is to enjoy our unique sea and to take concrete actions for its benefit. The day’s purpose is to increase knowledge of the sea’s diverse nature, culture, and history.

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A young child with a colorful swim ring walks down metal stairs toward a group of people in the water raising their arms, with a calm sea and distant shoreline under a clear sky.

WHAT IS THE IDEA?

Baltic Sea Day is an annual day of celebration in honour of the sea. The objective of the day is to encourage people to enjoy the unique sea, and to take concrete actions that benefit it. The purpose is also to provide information on the versatile nature, culture, and history of the sea.

Events

Person fishing with a rod while standing on rocky sea shore

HOW TO TAKE PART?

You can join in by celebrating or taking action to protect the sea – whether on your own, with friends, within your community, or by organizing an event to engage the wider public.

Ideas for activities

Four young people sitting on rocks by the water, enjoying a picnic with food and drinks on a blanket under a partly cloudy sky.

WHO CAN join in?

Baltic Sea Day is for everyone, around the sea and beyond. We simply ask participants to uphold the values of Baltic Sea Day.

The day can be celebrated at schools, libraries, companies, friend groups, cities, sport clubs – you name it.

Questions? Ask us!

Audience of children and adults seated on the floor and benches attentively watching a live performance in an indoor space with a large backdrop image of the sea.

WHY SHOULD YOU TAKE PART?

Baltic Sea Day reminds us of why the sea and its well-being matters. The day offers a platform to learn and speak about the sea, join forces with others, and celebrate the sea’s wonders. Many small waves can create a big momentum.

Baltic Sea information

Person wearing a dark shirt with the text "Save the Baltic Sea and its heritage" standing among a crowd at an outdoor event near boats.

baltic sea days in the past

The first Baltic Sea Day was organised in 2019. From the start, dozens of actors took part.

BALTIC SEA DAY 2025

160 events were officially registered through Baltic Sea Day website. The day was celebrated in eight countries, with biggest events taking place in Finland, Estonia and Sweden.

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