Unesco Green Citizens
Project begin: 04/04/2017

GreenKayak co-founders Tobias Weber-Andersen and Oke Carstensen have concocted a fun yet effective way to keep our waterways clean – rent a kayak for free and explore your local river or coastline, while collecting trash and sharing your experience on social media.


Leading organisation: GreenKayak
The country where the team is based: Denmark
Theme: Ocean
Sub-themes: Participatory/citizen science, Protecting marine ecosystems, Waste management
Selection: 2020/2021
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Project needs
Communication strategy design
Digital communication
Graphic design
In search of financial partners
Volunteer workforce
Web design

Keen kayaker Tobias started cleaning up Copenhagen´s canals during private tours, but soon realized that a more durable solution was needed. His vision? People collecting waste from their local rivers, harbors, lakes and coastlines every single day during the summer. And so, in 2017, the first GreenKayak was launched and quickly pre-booked months in advance. Oke joined the team in 2018, helping take the movement global and the number of kayaks from 3 to 58.

More water, more waste, more locations

Since 2017, more than 25,000 volunteers have paddled for our rivers and oceans under the hashtag #GreenKayak, collecting a total of over 42 tons of waste. The initiative has now reached Sweden, Germany, Norway & Ireland, offering local citizens from Hamburg to Dublin an enjoyable way to do their bit to protect nature. A mobile fleet of 10 GreenKayaks are used for activations and events to share and engage with school kids and other groups.

Working in partnership with local companies, GreenKayak is keen expand with the aim of hitting at least 100 locations across the globe in the next few years.

Do you want to discover, support or help set up GreenKayak near you?



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