Emergency services were called to the Shoreham Port area on Friday after concerns were raised for a missing vulnerable person.
Emergency services were contacted at around lunchtime on Friday (February 23) but the search was called off for a time after conditions worsened.
Brighton and Shoreham RNLI joined Shoreham and Newhaven coastguards and the HM coastguard helicopter, Sussex Police and Sussex ambulance service to search for the person, who was eventually found by helicopters on the beach.
The person was checked by paramedics and taken to hospital.