Wildlife

Otter Welfare in UK Freshwater Habitats in 2026

The otter has continued its recovery across UK river systems and welfare considerations include road mortality, pollution events, illegal persecution and fish trap mortalities.

Key Facts

Otters are now present across much of mainland UK after decades of decline
Road casualties remain the leading cause of otter mortality in many areas
Otters require approximately 1-2kg of fish per day to sustain their high metabolic rate
Fish trap drownings are a documented welfare problem in some areas
Water quality improvement has been a key driver of otter recovery

Welfare Considerations

Despite population recovery, individual otter welfare remains threatened by multiple factors. Road mortality causes traumatic injuries and death. Fish trap and hoop net drowning traps otters underwater causing death by asphyxiation. Pollution events reduce fish prey availability and can cause direct poisoning. Anglers sometimes illegally persecute otters near fisheries.

What You Can Do

Report otter road casualties to local river trusts for monitoring
Ensure fish traps and nets are rigged with otter guards where required
Report suspected illegal persecution of otters to police wildlife crime officers
Support river improvement and pollution reduction programmes
Contribute otter surveys to local river trust monitoring schemes