In 2008, Tonkin was nominated for "Best Lead Actress in a Television Series" Australian Film Institute Awards The series ran for three seasons with the series finale airing on 16 April 2010.Tonkin has also appeared on fellow Australian television shows Packed to the Rafters and Home and Away.In December 2005, Tonkin was cast as the role of Cleo Sertori on the Australian children tv show H2O: Just Add Water, which followed the lives of three teenage girls who turn into mermaids.
The series premiered on 7 July 2006 on Network Ten and has since gone on to be aired to a worldwide audience of more than 250 million.
To promote the series, she and her co-stars presented the best band award at the Nickelodeon UK Kids Choice Awards in October 2007.
Tonkin has appeared in a number of commercials which include Vauxhall Motors and Chick Management, and she has also modeled for the magazines Girlfriend, Teen Vogue, and Dolly.
She has also appeared in the music video for Miles Fisher's song "Don't Let Go." She is dating her fellow Vampire Diaries co-star Paul Wesley.
Phoebe Jane Elizabeth Tonkin was born on July 12, 1989, in Sydney, Australia.
She is best know for potraying Cleo Sertori in H2O: Just Add Water, Fiona Maxwell in Tomorrow, When The War Began, and Faye Chamberlain in The Secret Circle.
At the age of twelve, she began courses at the Australian Theatre for Young People (ATYP) at the Wharf Theatre.
She later graduated from Queenwood for Girls in Balmoral, New South Wales.
Phoebe also portrays the role of Hayley Marshall-Kenner in The Vampire Diaries and its spin-off The Originals.