European lobster

Homarus gammarus

4: OK - Needs improvement How we work out the ratings

What to check for

Location

Northern Ireland

Technical location

Atlantic, Northeast, Irish Sea, West of Scotland

Caught by

Pot, trap or creel

Rating summary

Based on limited data, there is concern for fishing pressure and biomass of European lobster in Northern Ireland. European lobsters have a high resilience to fishing pressure. Management requires considerable improvement. Further data is needed to reliably assess biomass and responsive effort controls are needed to improve European lobster stocks around Northern Ireland. Crab and lobster pots have low seabed impacts when deployed and retrieved correctly. They are also selective towards larger individuals, and can mitigate bycatch through escape panels.Rating last updated November 2025.

Technical consultation summary

Route 2 (data limited) scoring has been applied to this rating, with European lobster having high resilience to fishing pressure. There is concern for fishing pressure as the average number of pots used in the last 5 years (21,147) exceeds the 18-year average (20,404) and landings in 2023 (96 tonnes) were above the long-term average (70 tonnes). There is also concern for biomass as length-based assessments indicate that males have been overexploited in recent years, and there is no fisheries-independent assessment of biomass. Management of European lobster in Northern Ireland requires considerable improvement, with currently no responsive effort limits in place. There is a minimum landing size of 87mm in place, but this is below the Lopt (mean length for a healthy stock) for both sexes, leaving the stock vulnerable to overexploitation. Crab and lobster pots have low seabed impacts when deployed and retrieved correctly. They are also selective towards larger individuals, and can mitigate bycatch through escape panels.

How we worked out this Rating

References

Back to species
European lobster
How do we work out our ratings?

Learn more about how we calculate our sustainability ratings.

How our ratings work