Welcome to the portal on



for coastal zones in eastern Canada

We catalyze understanding and awareness of plastic pollution in Eastern Canada, a pervasive issue on Canada’s coastline.

Plastic pollution is a global scourge that greatly affects Eastern Canada, from the Great Lakes to the Atlantic Ocean, via the St. Lawrence River, Estuary and Gulf.

Only 9% of plastics are recycled in Canada, and Canadians are the world’s biggest producers of waste per capita, ahead of China, India and the USA.

More and more plastic items are being produced every day, only to be used for a few moments before being thrown away… And then ending up in our streams, rivers, lakes, the St. Lawrence and the Atlantic.


Here’s the result of our collective efforts against plastic pollution

20 Tons

equivalent to 2 minke whales

2 900 000 m2

or 6 times the surface area of the island of Montreal

10 167

Cigarette buds


participating volunteers since 2018

Plastic pollution, the issue

Marine litter and plastic pollution are a threat to the ecological balance, as they interact with other stressors to cause damage to ocean ecosystems.

Plastic fragments are found in the snow and ice of the highest mountains, in the stomachs of whales, birds, turtles and fish, float on the water surface and accumulate on the seabed. Microplastics are present in the air we breathe, in the smallest aquatic and marine organisms and in our own blood. Despite the omnipresence of pollution, the production and use of plastics continues to grow rapidly and is set to increase further over the next 20 years.

There are more microplastics in the oceans than stars in the galaxy 

A plastic bottle takes 450 years to degrade in the environment
A cigarette butt takes 15 years to degrade and contaminates 500 liters of water.
Styrofoam never degrades.

There are more microplastics in the oceans than stars in the galaxy

But what is the state of plastic pollution in eastern Canada?

The St. Lawrence River is ranked as one of the most contaminated rivers in the world by microplastics. Our data reveal a worrying trend: the concentration of plastic waste is increasing significantly towards the Gulf and the Atlantic, suggesting a shift of upstream waste from urban areas downstream.

the field
to understand it better

For the past 5 years, we’ve been mobilizing all along Eastern Canada’s coastline to study and better understand the impact of plastic pollution on shorelines, ultimately to help monitor, protect and, above all, prevent the occurrence of plastic pollution in the water environment of the Great Lakes/Atlantic Basin.

Find out more
our research


Read the full report Portrait of plastic pollution 2019-2024


Consult the database for the Portrait of plastic pollution 2019-2024


Consult the infography Portrait of the plastic pollution

Our programs


Discover our shoreline cleanup calendar

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Éducation and conference

Discover our conference and webinar offer

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Exhibition and visual arts

Discover our exhibitions and visual artworks made from plastic waste

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Send a message in a bottle

Ask our politicians to step up the fight against plastic on our riverbanks

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Join a cleanup near you

Check out our calendar of events to become an important ally in helping us restore Canada’s shorelines and waterways.

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Our partners

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