A body was discovered on Lancing Beach late yesterday afternoon (August 30).
The discovery prompted a multi-agency response, with police, HM Coastguard, South East Coast Ambulance Service and Critical Care Paramedics attending the scene.
A spokesperson for Sussex Police said:
"Police responded to a report of a body found on Lancing beach around 5.58pm on Wednesday 30 August.
"Despite the best efforts of members of the public and paramedics, who commenced CPR, the man was sadly declared deceased.
"His next of kin have been informed and are receiving support from specialist officers at this time.
"There are no suspicious circumstances and this will now be a matter for the coroner."