In-form Conor Ferguson is among five Northern Ireland swimmers named in the Irish team for the European Championships later this month.
The championships in London will be Ferguson's last chance to achieve the Olympic 100m backstroke standard.
Ferguson, 16, missed the Rio mark by 0.05 seconds in Dublin last weekend.
Sycerika McMahon will chase the 200m individual medley Rio standard while Danielle Hill, Curtis Coulter and Jordan Sloan will also compete.
McMahon, who competed at the London Olympics, is said to be producing impressive times in training at the moment and will also compete in other events at the Europeans.
Danielle Hill to focus on 100m backstroke in London
Larne swimmer Hill, who is a club-mate of Ferguson's, will be focusing on the 100m backstroke in London with Sloan's events including the 200m freestyle and Coulter selected for the medley relay squad.
Coulter has been drafted into the medley relay squad after his impressive performance in the 100m freestyle at last weekend's Irish Open Championships.
Ireland's three Olympic qualifiers Fiona Doyle, Nicholas Quinn and Shane Ryan have been named in the 12-strong swimming team.
However, former US international Ryan's participation is dependent on his nationality transfer being processed in time by international governing body FINA.
Donegal youngster Mona McSharry will compete in the 100m breaststroke after achieving the European standard in early March when she broke Sycerika McMahon's five-year-old Irish junior record.
Dan Sweeney, Alex Murphy and Brendan Hyland are also selected for the championships.