Clacton Beach Patrol, the RNLI lifeboat from Clacton and coastguard rescue teams from Clacton, Walton and Holbrook have been sent to help, as well as the coastguard rescue helicopter from Lydd. Essex Police and Essex Ambulance service are also attending along with Essex Fire and Rescue Service.
Five people have been rescued, with the search still ongoing for a sixth man.
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