Arona is cousins with Penrith Panthers and Cook Islands representative player Tupou Sopoaga.

On 3 November 2011 The annual RLIF Awards dinner was held at the Tower of London and Arona was named Cook Islands' player of the year.

[16] In round 1 of the 2014 NRL season, Arona made his National Rugby League Premiership début for the Cronulla-Sutherland Sharks, scoring a try in Cronulla's 18–12 loss to the Gold Coast Titans at Remondis Stadium.

[18] On 5 November 2015, Arona signed a one-year contract with Super League side Wakefield Trinity starting in 2016.

[22] In Arona's final professional game, he scored a try and kicked the last conversion of the match in the Cook Islands 92–10 loss against Tonga at the Riverside Stadium.

The Cook Islands finished their 2021 Rugby League World Cup campaign in third place in Group D, and were eliminated.