Fishing nets are the most likely cause of death for common dolphins stranded on Cornwall's coast, research shows.

More than 860 short-beaked dolphins were stranded from 2018 to 2024 and the vast majority were dead, it found.

The Defra-funded study by the University of Exeter, Cornwall Wildlife Trust and Cornwall Marine Pathology Team examined 175 stranded dolphins and concluded 39% died after getting tangled in fishing gear.