Visitors swimming at beach, Suomenlinna island near Helsinki, Finland, Europe

suomenlinna island beach swimming helsinki finland summer visitors tourists outdoor leisure relaxation cool water sandy shore nature marine life scenery baltic sea seaside rocks swimming area blue sky family friends fun sunbathing coastal landscape activity warm weather escapade recreation adventure joy tranquility swimming spot holiday exploration natural beauty island life beachgoers summer vacation leisure activities aquatic fun day trip picturesque refreshing scenic views relaxation spot swimming pool