Police have repeated warnings about "tombstoning" after a teenage girl was injured falling 30ft on to submerged rocks.
The 14-year-old was the latest to be hurt jumping into the sea from a height, when she plunged from Newhaven harbour arm at 7.30pm last Saturday.
She had been playing with friends in an area which is closed to the public for safety reasons.
Sergeant George Molloy of Sussex Police said the girl had been lucky to survive the incident and warned others it was dangerous to jump from the harbour arm.
As temperatures soared in recent weeks there have been increased reports of teenagers jumping from piers and rocks into the sea.
The girl plunged into the water at low tide after she climbed barriers on to the harbour arm.
Two anglers rushed to her aid after hearing her screams and pulled her to safety. She was given first aid by police community support officers.
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