Marine Mammal Strandings: Response and Welfare

Marine mammal strandings are distressing events for both animals and responders, requiring rapid assessment and welfare-focused decisions from trained teams.

Key Facts

Over 800 cetaceans strand around UK coasts each year, with a significant proportion found already dead
Mass strandings - multiple animals coming ashore together - are associated with social species and sonar events
British Divers Marine Life Rescue (BDMLR) trains and coordinates marine mammal medic volunteers in the UK
Live stranded animals face dehydration, overheating, pressure injuries and respiratory compromise on shore
Euthanasia decisions for stranded animals must balance welfare against any chance of successful refloating

Welfare Considerations

Stranded marine mammals face multiple, rapidly escalating welfare threats once out of the water. Their body weight compresses internal organs, heat regulation fails without water, and dehydration occurs rapidly. Welfare-focused responses that prioritise either rapid euthanasia for animals with poor prognosis or skilled refloating support for viable individuals are essential. The welfare of rescuers must also be considered in dangerous stranding scenarios.

What You Can Do

Know how to report strandings in your country - in the UK call the BDMLR hotline 01825 765546
Never try to refloat a stranded marine mammal without trained assistance - this can cause harm
Support organisations like BDMLR that train volunteers in humane stranding response
Advocate for research into the causes of mass strandings including sonar use by navies
Donate to marine mammal research organisations that improve stranding response protocols