Family members, volunteers, and army personnel are still searching for Ben Garrett, who is missing since April 1 last.
Ben was last seen leaving Carbon nightclub on Eglington Street in Galway city, at around 1.45am on the date.
Ben is described as being 6ft tall, of athletic build, with short brown hair. He was wearing dark jeans and a light blue, round-neck jumper when last seen.
It is understood that searches are focusing on the Oranmore coastline.
Anyone who has seen Mr Garrett or who can assist in locating him is asked to contact Galway Garda Station at 091 538000, the Garda Confidential Telephone line 1800 666 111 or any garda station.