Daniel Wiffen and Mona McSharry spearhead a team of 12 for Ireland at the World Aquatics Championship in Singapore.
The world championships take place from 27 July to 3 August in Singapore. So who are the Irish swimmers on the hunt for world championship success?
Newly crowned European Under-23 champion Ellie McCartney will be up on day one in the heats of the 200m medley. McCartney won gold in this event in June in a time of 2:12.50.
She will face fellow Irish team-mate and Olympic semi-finalist Ellen Walshe, who is the current Irish senior record holder with a time of 2:10.92.
McCartney, from Enniskillen, trains in the Limerick national centre under head coach John Szaranek.
The 20-year-old will also compete in the heats of the 200m breaststroke, an event she won silver in at the U23 Europeans, and will face two-time Olympian Mona McSharry on day five of competition.
This will be her first senior world championships.
Also on day one we'll get our first glimpse of the form of Olympic gold medallist Wiffen as he starts his hunt for distance success in the 400m freestyle.
Wiffen placed seventh in this event at the last world championships but will be eager to improve.
The 24-year-old Armagh man will be aiming to defend his world championship titles from 2024 in the 800m freestyle heats on day three of competition and the 1500m title on day seven but he will face stiff competition from his Stateside rival Bobby Fink in both these events.
Wiffen is the current European record holder and Olympic champion in the 800m freestyle and bronze medallist in the 1500m freestyle.
Three-time Olympian and veteran of the team Shane Ryan will hope to make a splash in three sprinting events.
Ryan will compete in the heats of the 50m butterfly on day one, 50m freestyle on day six, and the 50m backstroke on day seven.
The 31-year-old has medal potential having made the podium in the 50m backstroke at the World Short Course championships in both 2018 and 2024 and the European Championships in 2018.
Ryan will face fellow Irish sprinter Tom Fannon in the 50m freestyle.
Fannon set an Irish senior record time of 21.74 at the Olympic games in Paris, where he placed an impressive 10th in the semi-final and became the first Irish man to break 22 seconds.
Both athletes were born outside of Ireland but are eligible due to Ryan's Laois-born father and Fannon's grandfather, who hailed from Galway.
Limerick man Eoin Corby, 23, will be the final Irish swimmer in the water on the opening day of competition.
Corby will compete in the heats of the 100m breaststroke.
At the recent U23 European Championships, he won his first international medal, touching the wall in second place in the 200m breaststroke.
He will compete in the heats of the 200m breaststroke on day five of competition and hope to better his 17th-place World Championship finish from Doha 2024.
Two-time Olympian Danielle Hill has a busy schedule with four events at these championships.
The Larne swimmer competes in the heats of the 100m backstroke on day two, 50m backstroke on day four, 100m freestyle on day five, and 50m freestyle on day seven.
The 25-year-old made the semi-finals at the Olympic games in Paris last year, placing 16th in the 100m backstroke.
She won European gold in the 50m backstroke and silver in the 100m backstroke last year and is the Irish senior record holder in all four of her events.
Hill is Ireland's fastest female swimmer and has potential to make the podium during the week.
John Shortt may be the youngest on the team at only 18, but he is already a World Championship semi-finalist in the 200m backstroke, placing 14th in Doha last year.
Shortt recently became European junior champion in the 100m backstroke and European bronze medallist in the 200m backstroke in July of this year.
The Galway man will compete on day two in the heats of the 100m backstroke and day five in the 200m backstroke.
Day two will also see the return of Olympic bronze medallist McSharry in the heats of the 100m breaststroke.
McSharry became the first Irish person in nearly two decades to win an Olympic swimming medal when she touched the wall third at the Games last year in Paris.
The Sligo woman, who trains at the University of Tennessee under coach Matt Kredich, will also compete in the 200m breaststroke on day five and 50m breaststroke on day seven.
The 24-year-old is the current Irish record holder in all three events.
She has claimed World Cup silver in the 50m breaststroke and bronze in the 100m breaststroke in 2023 and also has a world short course bronze in the 100m breaststroke from 2021.
At the World Championships in Doha last year she made finals in all three events but missed out on podium finishes.
Freestyle specialist Evan Bailey will compete in the heats of the 100m on day four and 200m on day two.
The 20-year-old New Ross man solidified his place on the team when he won gold in both events at the Irish Open in April this year.
At the recent U23 European Championships Bailey placed eighth in the final of the 200m freestyle.
He has been swimming on his best times this year and will be looking to improve through the competition.
Another swimmer at his best this year is butterfly specialist Jack Cassin.
The 21-year-old swam personal bests at the U23 European Championships in June in both the 200m (placing fifth in the final) and 100m.
He will swim the heats of the 200m on day three and 100m on day six of competition.
Double Olympian Ellen Walshe will compete in three events throughout the competition.
The 23-year-old, who trains in her home club of Templeogue SC under coach Brian Sweeney, is a strong, dynamic swimmer with five Irish senior records to her name.
Walshe will compete in the heats of the 200m medley on day one, 200m butterfly on day four, and the 400m medley on the final day.
She was an Olympic finalist in the 400m medley and semi-finalist in the 200m medley.
In 2023 Walshe won European short-course bronze in the 400m medley and in 2021 she won World SC silver in the 400m.
Team Ireland will compete in two men's relays: 4x200m freestyle on day six and 4x100m medley on day eight.
The relay members are to be confirmed, however, 19-year-old Roscommon man Cormac Rynn is a guaranteed member of the 4x200m team. This will be his first World Championships.
You can watch the action on Eurovision Sport
Irish in action (heats)
Day 1
W 200m IM – Ellie Mc Cartney, Ellen Walshe
M 400m Freestyle – Daniel Wiffen
M 50m Butterfly – Shane Ryan
M 100m Breaststroke – Eoin Corby
Day 2
W 100m Backstroke – Danielle Hill
M 100m Backstroke – John Short
W 100m Breaststroke – Mona McSharry
M 200m Freestyle – Evan Bailey
Day 3
M 200m Butterfly – Jack Cassin
M 800m Freestyle – Daniel Wiffen
Day 4
W 50m Backstroke – Danielle Hill
M 100m Freestyle – Evan Bailey
W 200m Butterfly – Ellen Walshe
Day 5
W 100m Freestyle - Danielle Hill
M 200m Backstroke – John Shortt
W 200m Breaststroke – Ellie Mc Cartney, Mona McSharry
M 200m Breaststroke – Eoin Corby
Day 6
M 100m Butterfly – Jack Cassin
M 50m Freestyle – Tom Fannon, Shane Ryan
M 4x200m Freestyle Relay – Team Ireland
Day 7
W 50m Freestyle – Danielle Hill
M 50m Backstroke – Shane Ryan
W 50m Breaststroke – Mona McSharry
M 1500m Freestyle – Danel Wiffen
Day 8
W 400m IM – Ellen Walshe
M 4x100m Medley Relay – Team Ireland
