Police are looking for two motorcyclists seen riding over a seal pup in a seaside village in Norfolk.
They were spotted on trials bikes late on Friday morning in Beach Road, Sea Palling, officers said.
“This is a disturbing incident,” said PC Thomas Walsh of Norfolk Constabulary.
“It’s not clear whether the seal pup was alive at the time the bikes ran over the pup, but we have a duty of care to protect the wildlife on our coasts.”
Norfolk’s beaches are some of the UK’s most important sites for the mammals’ pupping season, which typically spans from November to January.
Officers are appealing for information.
“We always urge people to act responsibly and ensure the seal population is not disturbed and we will act against those who wilfully harm our wildlife,” PC Walsh added.
Anyone with information should contact PC Walsh on 101, quoting reference 495 of 3 December 2021, or call Crimestoppers, anonymously, on 0800 555111.