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Yes. You can trust that seafood with the blue MSC label was caught by a responsible fishery in a sustainable way that ensures healthy oceans and safeguards seafood supplies for the future. This assurance is provided through independent assessment of fisheries to the MSC Fisheries Standard.

Science based standards

To be sold with the MSC label, seafood must come from a fishery certified to the MSC Fisheries Standard. 

This standard was developed in consultation with a wide range of experts including scientists, the fishing industry and conservation groups. The Standard is reviewed every five years to ensure that it continues to reflect international best practice in fisheries management and science.

Certification requires fisheries to ensure that:

  • Fish stocks are sustainable – there are enough fish are left in the sea to reproduce.
  • Environmental impacts are minimised - fishing operations must be carefully managed to maintain the structure, productivity, function and diversity of the marine ecosystem.
  • Effective management - the fishery must comply with relevant laws and have a management system that allows it to respond quickly to changes in the status quo.

The MSC tracks and monitors the impact of the combined efforts of certified fisheries on fish stocks, fishing practices and fishery management. Our analysis shows that certified fisheries are delivering improvements in fisheries management.

Sustainable Seas: what is the MSC Fisheries Standard and how does it ensure healthy oceans

Sustainable Seas: what is the MSC Fisheries Standard and how does it ensure healthy oceans

Third party assessment

The MSC does not assess fisheries. This is the job of a third party independent assessment team made up of experts in fisheries management. They consult everyone with an interest in the fishery – from retailers to NGOs to governing bodies. This ensures that all information is considered and that outcomes are based on evidence. All evidence, decisions and reports are published on our Track a Fishery website.

Once certified, fisheries are audited annually to ensure that they are maintaining the required level of sustainability and meeting any conditions of MSC certification.


Certified supply chains

You can be sure that seafood with the MSC blue label has come from a certified sustainable fishery.

Anyone selling MSC certified seafood must follow strict rules to ensure that it is kept separately from other fish and is clearly labelled at all times. We carry out DNA testing and unannounced tracebacks to verify the system works. 

DNA testing has shown that mislabelling rates for MSC certified seafood is less than 1%, much lower than studies of other products.

“I am genuinely encouraged to see the results from the latest study by the MSC, demonstrating that its ecolabel is the only gold standard for sustainability.”

Dr Bryce Beukers-Stewart, Fisheries Scientist

University of York, UK

Don’t just take our word for it

The MSC was the first international seafood labelling program to be recognised by the Global Sustainable Seafood Initiative (GSSI) which confirms that we meet the United Nations Food and Agriculture Organisation’s guidelines.  

The MSC is ISEAL Code Compliant. Our system has been independently evaluated against ISEAL’s Codes of Good Practice - a globally-recognised framework for effective, credible sustainability systems. More information at

Organisations such as WWF recommend consumers look for the MSC label on seafood.

Read more about how we meet best practice

““The MSC has shown over twenty years that its approach can make a significant contribution to ocean conservation.””

John Tanzer, Practice Leader, Oceans

WWF International

Find out more

What does the blue MSC label mean?

What does the blue MSC label mean?

The blue fish label is only applied to wild fish or seafood from fisheries that have been certified to the MSC standard, a scientific measure of sustainable fishing.

Buy sustainable seafood

Buy sustainable seafood

Around the world, you’ll find the blue fish label on over 30,000 products and menus in almost 100 countries.

Real life stories

Real life stories

The best way to understand the impact of the MSC program is through those involved. Read about the passionate people taking care of our oceans.