Murphy the star attraction at Bangor
Irish Olympian and European bronze medalist Barry Murphy and British Olympian Hannah Miley are the star names at this weekend's first big irish meeting of 2014.
The Dave McCullagh Memorial Meet, which gets under way today, will also be the first national competition to take place at the new Bangor Aurora Leisure Centre.
Irish record holders Andrew Meegan, Shauna O'Brien and Brendan Hyland are also in action as Ireland's top performers seek qualification for the LEN European Championships in Berlin in August. the North's leading swimmers will also be looking to qualify for the Commonwealth Games in Glasgow in July.
Paralympic athletes, including 2013 World Championship medalists Darragh McDonald, Ellen Keane, James Scully and Laurence McGivern, will attempt to qualify for the IPC European Championships in Eindhoven in August.
For Ireland's junior and youth squad, competition will come in the form of a strong Scottish team as they face off in the Junior Celtic Duel Meet.
Antoinette Neamt, who set an Irish senior record in the 1500m freestyle at Short Course Nationals in December, is part of a 31-strong team which also includes Irish junior record holder Laoise Fleming.
They will be hoping to seal a place in the squads travelling to the European Junior Championships in Dordrecht and the Canadian Age Group Championships, which both take place in July.