
FOS – Friend of the Sea
Friend of the Sea Certification gives the public reassurance that fish products originating from a fisheries are managed in a responsible and sustainable way – something that is becoming critical.

Friend of the Sea Certification
About the certification
Protecting Life Below Water
Right now, over 2,000 aquatic species are at risk of extinction (IUCN Red List), and overfishing is one of the biggest threats. More than half of the world’s commercial fish stocks are already overexploited, depleted, or lacking reliable data. To make matters worse, certain fishing methods damage seabed ecosystems and create unsustainable levels of waste.
Aquaculture can offer a lower-impact alternative—but only when managed responsibly. Poorly planned aquaculture has led to the destruction of mangrove forests, water pollution, and even the genetic weakening of wild fish populations.
At Control Union UK, we believe in being a friend of the sea by offering the Friend of the Sea programme; working to protect marine biodiversity, promote sustainable fishing and aquaculture practices, and ensure a healthier future for our oceans.
Only seafood products that meet rigorous sustainability standards are eligible for Friend of the Sea certification.
Wild-Caught Fisheries: Certification is granted exclusively to products derived from healthy, non-overexploited stocks. Fishing must be conducted using selective methods that result in no more than 8% discards and cause negligible impact on seabed ecosystems.
Aquaculture Operations: Farms must undergo a thorough Environmental Impact Assessment prior to approval. Certified sites are required to:
Refrain from the use of growth hormones and antifouling paints
Implement robust water, energy, and waste management systems
Ensure effective measures to prevent stock escapes
Source feed exclusively from sustainable, Friend of the Sea–approved suppliers

What we offer
Control Union Certifications is accredited to offer certification for the Friend of the Sea programme. Control Union UK is authorised to carry out inspections, audits and verifications for the Friend of The Sea scheme.
How you benefit
The benefits of obtaining certification by Control Union

Can we help you?
Need more details about our certification services, advice in your language, or answers to other questions? We’re here to help.