Cully and Sully, Hove - Billy Barraclough

What we do

We tackle the ocean emergency by working with communities, businesses and governments.

Today, our ocean is in crisis because of human activity.

A healthy ocean can help protect us all against climate change and it can sustain a diverse array of species, including our own.

From cleaning beaches to shaping government policies, together we can work towards a cleaner, better-protected, healthier ocean.

One we can all enjoy.

For a cleaner ocean

For a cleaner ocean, we campaign to stop pollution entering our oceans, and our volunteer beach cleans remove and record the litter on our coastline.

Using science, we track the health of our waters, influence business practice and call for better environmental regulations.


litter items found per 100m of beach surveyed at last year's Great British Beach Clean



of beach cleans last year found face masks and PPE



drop in plastic bags found on UK beaches since 5p charge was introduced

Read more about our work and how we took the UK Government to the High Court to ensure our seas are properly protected from sewage pollution, safeguarding vital habitats and species.

Find a beach clean near you

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For a better-protected ocean

Only seas full of life can absorb carbon and help tackle climate change.

The Marine Conservation Society secures space where species and habitats can recover. We’re campaigning for a minimum of 30% of UK waters being effectively managed by 2030 to protect wildlife and ecosystems.

From seagrass planting and fish tagging to working with coastal communities, we're recovering the health of our seas in the UK and abroad. Explore our habitat recovery projects to learn more.

Join our community of members

Help us protect and restore our ocean

For a healthier ocean

We promote sustainable fishing and seafood to minimise harm. We support businesses to catch, produce and source seafood sustainably and incorporate conservation into their work.

Our Good Fish Guide highlights the most and least sustainable fish, so people can make better seafood-buying choices.

From why we work on sustainable seafood to advocacy and policy making, find out more about our sustainable seafood work.

Add the Good Fish Guide to your home screen for sustainability at your fingertips

Together we can make a difference

To make environmental change happen, we:

  • Influence politicians and businesses to make policy, legislative and practical changes. We challenge those responsible when laws are not enforced, and we influence investment and procurement decisions.
  • Call on the UK Government to recognise the value of the ocean for biodiversity, for climate and for our economy. Our Manifesto for our Seas sets out an ambitious and bold agenda for ocean protection and recovery, which would cement our position as global leaders on the world stage.
  • Engage communities to get involved in our campaigns and call for action to protect our seas.
  • Educate and influence people and businesses to understand the value of a healthy ocean and change their behaviour.
  • Carry out practical conservation activities with volunteers and partners to collect and share scientific evidence, using this data to better understand our seas and inform our work.

For more than 30 years, we’ve been the voice of the ocean, defending habitats and species. We work to protect the UK’s seas and contribute to international data and legislation wherever possible.

This is vital not only to protect wildlife but to support communities and jobs. And the ocean gives back, improving our physical and mental health when we connect with it.

Our work has resulted in bans on single-use items, legislation to better manage fisheries, and greater awareness among supermarkets of the need to stock sustainable seafood. But there is much more to do.

Read more in Our action plan.

One ocean for everyone

Whoever and wherever we are, we share one ocean. We all must have equal opportunities to benefit from it. And everyone has their part to play in learning about and protecting it. By working together, we can achieve our shared vision of seas full of life, where nature flourishes and people thrive.

Read about our diversity, equity and inclusion statement.

Sardines shoal Rich Carey

Credit: Rich Carey via Shutterstock

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Healthier oceans, protected oceans