Koningsvissen 2025

Sunday 27 April 2025
The party’s over, but we’re just getting started!
Join us for Koningsvissen in Amsterdam at Het Scheepvaartmuseum:
a fun, hands-on cleanup of the canals, the day after King’s Day celebration.

At 12:00 we start with nets in hand. We’ll fish plastic from the water in boats made from…Amsterdam canal plastic. It’s fun, gezellig, and it makes a real difference. Compete for prizes, meet great people, and enjoy the city from the water. Just register, show up, grab a net, and go!

This edition of Koningsvissen will be SuperDuperExtraSpecial.
Because we’ll reveal our next big project. The PET bottles you’ll fish aren’t just waste—they’re raw material of something unexpected. Something that unites us Amsterdammers. Something that ignites positive impact. Something small and very big at the same time.
So join us! Let’s clean the canals, and create new exciting things!

Sign up now – Stop Talking, Start Doing.

New: The Positive Impact Workshop

Corporate Social Responsibility (CSR) is a hot topic. However, many companies still struggle to determine what it means to them and how they can make it part of their daily business. Well, we’ve learned a thing or two about creating positive impact with a sound business model. Therefore, we have developed an energizing workshop that will spark your imagination about the Positive Impact Potential (PiP) of your organization.

The workshop is a perfect mix of inspiration, fun and concrete action. Standard ingredients are an inspirational talk by Plastic Whale’s founder Marius Smit, plastic fishing on the canals of Amsterdam or a beach cleanup at Amsterdam beach and an interactive workshop guided by professional workshop masters. Our aim: at the end of the workshop your team leaves inspired and energized, with a clear roadmap to positive impact for your organization.

Join our mission

At Plastic Whale, our mission is clear: to make waves of change. Together with our corporate partners and the general public, we’re committed to cleaning up our lands and seas, ensuring a sustainable future for generations to come. We invite you to be part of this movement and join us in taking action, because it’s time to stop talking and let’s start doing!

We collect

We collect as much plastic waste with as many people as possible. We started in the Netherlands but we aim to involve people across the globe.

We create

We create economic value from plastic waste. We currently make boats and office furniture. The more we create, the more raw materials we need, the more positive impact we make.

We educate

With our school program we reach thousands of young people in NL and internationally. With presentations and workshops we reach and inspire companies and individuals to get involved with our mission.

Be part of the solution!

At Plastic Whale we don’t like talking about the problem too much. We rather work on the solution! By creating cool products from plastic waste, involving as many people as possible. The more people join, the more positive impact we create. We started in Amsterdam, but we want to go global. There are many ways in which you can contribute to the solution: come plastic fishing with us, spread the word, create your own cool product, support our school programme. Just hop on board!

Our partners

Discover the inspiring companies who share our vision and mission. By partnering with us, they’ve taken a crucial step towards a cleaner and healthier planet. Become part of the Plastic Whale family and make waves with us. Would you like to join? Contact us now!

Together for plastic free land & sea