This video can not be played
A British amateur photographer called for help to get a packed beach in Australia evacuated after spotting a shark on his drone.
Expat David Alphonso, originally from Northampton, saw the great white swimming close to the shoreline in Western Australia, where hundreds of people were bathing.
He phoned his wife on the beach, who told a lifeguard and a helicopter was scrambled to decide whether the animal was a potential danger.
He said: "If I hadn't have spotted it, it could have potentially been a danger of a shark attack if people are splashing in the water, although it is quite rare."
British drone user raises shark alarm in Australia. Video, 00:01:04
Up Next. Seal spotted in city river miles from the sea. Video, 00:00:41
Swan stuck in drainpipe gets winched to safety. Video, 00:00:30
Family gives up trying to block badger from kitchen. Video, 00:00:59
Baby elephant named Queen as zoo patron tribute. Video, 00:00:59
'Nobody wants to see the seals harmed' Video, 00:01:58
Fox filmed playing swingball in back garden. Video, 00:00:37
Woman rescued from rubble of Dnipro apartment building. Video, 00:00:50
Video appears to show Nepal plane roll before crash. Video, 00:00:10
Crowds gather at Nepal plane crash site. Video, 00:00:45
The man who first discovered plastic in the ocean. Video, 00:03:14
Thousands of Israelis hold legal reforms protest. Video, 00:01:05
California's hydro-climate whiplash explained. Video, 00:01:20
One-minute World News. Video, 00:00:55
Bursts of flames after Lithuania gas pipeline explosion. Video, 00:00:23
How drones could be the future of Indian farming. Video, 00:02:36
I saw life and death on my first day in the job. Video, 00:02:12
© 2023 BBC. The BBC is not responsible for the content of external sites. Read about our approach to external linking.
