A rescue operation was launched in Eastbourne late on Saturday night after reports of a person in the water clinging to the pier’s supports.
Sussex Police officers also attended the scene and the person was bought to safety by the RNLI.
A spokesperson for the RNLI said: “Solent Coastguard requested our D-Class Inshore lifeboat to launch on service in response to a person in the water, clinging to the pier supports.
“Fortunately, as the inshore lifeboat was at the water’s edge, just about to launch, police officers had managed to remove the casualty from any further danger and the launch was cancelled.
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