Sea rubbish removal
It is lovely to take a stroll by the waterways around Helsinki, but increasingly the view of the water is one of eddying currents of rubbish floating about. When I lived in Amsterdam, I noticed they employed water filtering systems in various locations to help deal with such challenges. Could Helsinki place such rubbish filtering mechanisms in targeted spots --such as Hietalahti?
(One of the biggest offenders is the increase of take away coffee cups--or rather the lids--could Helsinki make a design competition to do away with plastic lids and design a paper replacement?)