There was a short, sharp programme of just eight events on day one of the unique Irish Winter Meet as the National Aquatic Centre in Dublin played host to the first indoor sporting event since March for Swim Ireland's elite and performance competitors.
Essentially a time trial, the meet has replaced the Irish Short Course Championship, which is normally held in December and which would attract some 600 swimmers from across the 32 counties.
Instead, the competition, which has no medal ceremonies, has a unique format of short course (25m pool) heats in the morning and long course (50m pool) finals in the evening.
And in only the second swim of the evening, Daniel Wiffen soloed to a new Irish record of 15 minutes 19.04 seconds in the men's 1500m freestyle.
The previous record of 15:19.98 belonged to Andrew Meegan and had stood since 2013.
"I was happy enough. I recently moved to England for university and upped the mileage a lot, so it's a bit tough," the 19-year-old from Larne said after his record-breaking performance.
"I’m happy to take down the 1500 mark, it was standing there for a while. It was Andrew Meegan’s before, and I raced him when I was younger, so I was happy to take his record over anybody’s.
"It’s very weird competing here today, I had to do the race by myself, and I would have loved somebody beside me, just to keep me going.
"But then, I actually enjoyed swimming by myself at the same time."
The men's 50m breaststroke saw an Irish junior record for Eoin Corby, who beat Darragh Greene, the only Irish swimmer to have achieved an Olympic consideration time so far.
Corbys clocked 27.76 in the final race of the evening.
In between, Olympian Shane Ryan and Irish international Danielle Hill, as expected touched home first in their respective 50m backstroke events.
The meet will be watched closely by the other national governing bodies which operate under the auspices of Sport Ireland as to what the future holds for indoor competition, especially as Athletics Ireland say it intends to have their national Indoor championships at the National Sports Campus in February.
The heats on day two take place at 10am.