Clare Civil Defence will assume responsibility for coordinating the search for missing Clare man David McMahon.
The volunteer service has been asked to take over the operation by the Kilkee unit of the Irish Coast Guard.
The Shannon based search and rescue helicopter Rescue 115 will rejoin the search effort while the Garda Water Unit is also expected at the scene today.
Mr McMahon, a school teacher in Ennis, has been missing since he left his home in Lissycasey last Friday.
Hundreds of civilian volunteers including family, friends and work colleagues have been assisting in the search in recent days.
Civil Defence personnel have been involved in the search since Saturday when they first deployed drone technology in an effort to locate Mr McMahon.
From today, Clare Civil Defence will coordinate the search operation on the ground in Kilkee.
Tragedy befell the effort yesterday when one member of the Irish Coast Guard lost her life and two others were injured when their boat capsized.