Oxnard police said they found the body of a man in the dunes by Oxnard State Beach Park around 9 a.m. Wednesday.
Investigators are trying to determine if foul play was involved.
The Ventura County Medical Examiner's office has not released the man's identity.
An autopsy still needs to be done.
Anyone with information is urged to contact Detective Ken Tougas at 805- 200-5669. If you wish to remain anonymous, you may call the violent crimes hotline at (805) 982-7070 or Ventura County Crime Stoppers at 800-222-8477.
You may also visit this site http://www.venturacountycrimestoppers.org/contactus.aspx to submit a tip via text or email.