Geraldton man in his 60s found dead after shipmates tread water for four hours

Geraldton Marine Rescue was called to the incident.  (Facebook: Geraldton VMR)

A man has died and two other people have been treated for hypothermia after spending four hours in the water off the West Australian coast.

The incident was reported to police at about 2:15pm on Sunday after a vessel came across the group near Geraldton, about four hours north of Perth.