Former world champion Geoff Huegill has backed Canberra swimmer Alicia Coutts to go out on a high at her Olympic Games swansong.

Grant Hackett admits he has tarnished his reputation, but an even greater swimmer who has had his own problems is helping him battle his demons.

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Is swimming now at the point that the only way you get to be world-class is by training to such extremes that life-skills are left in your wake?

Organisers have promised to install an air-conditioned tent to ward off mozzies as threat of Zika virus continues to loom over Games.

He's lightning fast in the pool, is obsessed with the cosmos and has his own Weibo page. Rio-bound Cameron McEvoy's star is rising ... in China of all places.

A former great of the pool and one of it's rising stars have gone in to bat for Grant Hackett, saying the disgraced Olympian should still be amentor for the Australian team in Rio.

Swimming Australia boss John Bertrand is shocked by Grant Hackett's behaviour on a flight from Adelaide to Melbourne on Sunday.

The Olympic breastroke champion says the sport shouldn't distance itself from Grant Hackett and that his imperfections only highlight the pitfalls of retirement.

Swimming great says he "seriously and genuinely regret my poor behaviour."

For so long, those close to Hackett have been prepared to back their man. And now? Now, they're not so sure.

What really happened in business class on Sunday's now-infamous Virgin flight from Adelaide to Melbourne?

The broadcaster answered a phone call at 1.30pm on Sunday. It was about Grant Hackett.

Former Olympic swimmer Grant Hackett has been questioned by police in Melbourne after an altercation on a flight.

Michael Phelps won the 200m butterfly at the Arena Pro Swim meet on Friday night, where wind gusts of almost 60km/h whipped up the water and created challenging conditions.

He looks like a blond Clark Kent, or a Swedish hipster.

Victorian Mack Horton powers home to leap up all-time 1500m ranks, putting Grant Hackett's record and Rio gold in sight; Cate Campbell comes within a whisker of the world record in the 50m freestyle.

The freestyle gun tops the list as the Australian Olympic Committee announced a 34-strong team that is expected to perform strongly in the Rio pool.

Australian swimming stands poised to rebound in emphatic fashion at the Rio Olympics, driven by a group of clean-living, fast-swimming young guns that have reshaped the sport from the inside-out.

A world record-breaking Australian Paralympic swimming team has been unveiled at the Rio trials in Adelaide.