The city area includes around 300 islands, many of which can be reached via ferries. Some you can even walk to over bridges. If you’re lucky, you can even spot a seal. In winter, you can watch the sea smoke on the shores, take a cool dip in the icy waters, walk on the ice or try ice fishing.
There is plenty to soak in, from the smooth rocks of the shoreline to the distant horizon. Observe the shades of gray, admire the ferries passing by, and speculating on seal sightings to enjoy delicious restaurant dishes. In any case, expect plenty of Helsinkian archipelago attitude and the splatter of salty waves.
https://www.myhelsinki.fi/en/see-and-do/neighbourhoods/seaside-helsinki