Olympic teammates and rivals have paid tribute to the career of Australian swimming great Ariarne Titmus, who has announced her retirement at the age of 25.

Titmus won four Olympic gold medals across the Paris and Tokyo Games, and topped the podium as many times at the world championships (long course).

Titmus announces retirement

Ariarne Titmus draws the curtain on a decorated career, in which she won eight medals across two Olympic Games.

She confirmed she had retired on Thursday after taking an extended break following last year's Paris Olympics.

Kaylee McKeown, who has won five Olympic gold medals for Australia during her career, was among those to shower Titmus with praise.

"You are incredible," McKeown wrote on Instagram.

"[I'm] Privileged to have witnessed a living legend in

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