Harbour Seal Population Monitoring and Conservation

UK harbour seal populations have declined significantly since 2001. Understanding the threats and monitoring approaches helps conservation action protect individual and population welfare.

Key Facts

UK harbour seal populations fell by 22% in the Orkney and Shetland islands between 2001 and 2006
Causes of decline are poorly understood but may involve food availability, disease, predation, and human disturbance
Phocine distemper virus caused major mortality events in 1988 and 2002, killing tens of thousands of seals
Harbour seals are legally protected in the UK under the Conservation of Seals Act 1970
Licensed shooting of seals by fish farms remains controversial as a wildlife management tool
Seal research including satellite tracking, diet analysis, and population surveys informs conservation management

Welfare Considerations

Harbour seal population decline represents welfare failure at scale — individual seals struggling to find adequate prey, affected by disease, or killed legally or illegally all contribute to the downward trend. The licensed killing of seals near fish farms raises acute welfare concerns about both the legality and humaneness of specific methods. Each seal killed or injured by entanglement in fishing gear or boat strike represents preventable suffering that better management could reduce.

What You Can Do

Report injured or distressed seals to BDMLR (01825 765546) for professional assessment
Report any suspected illegal seal killing to the police wildlife crime officer
Support campaigns opposing sealed shooting licences near fish farms where alternatives exist
Donate to seal research programmes monitoring population trends and threats
Remove all marine litter and report discarded fishing gear that poses entanglement risk
Choose fish from sources that publish their seal management policies and minimise lethal control