His first international cap was against Ireland XV, at Lansdowne Road, on 19 October 1985.
In the tournament he only played the quarter-final against France, at Auckland and scored a try.
In the squad he was the only player non residing in Fiji, as required by the selection policy at the time.
Damu also played for Fiji Bitter Marist Sevens.
[4] At the time of the 2011 Rugby World Cup, Damu, along with his brother Ilaitia and former Flying Fijians Koli Rakoroi, Acura Niuqila, Willie Rokowailoa, Inoke Male and Isikeli Tikoduadua formed a committee called Ex-Fiji Reps with a campaign to raise $3 million in less than six months time in order to assist Fiji's preparation for the 2011 Rugby World Cup.