Tiny Melissa Wu is all but certain to become the youngest person ever on an Australian Olympic diving team after qualifying for Beijing at selection trials in Hobart.

Wu, 15, and Friday's standout performer Briony Cole upstaged their more experienced rivals Loudy Wiggins and Chantelle Newbery to narrowly win the synchronised 10 metre platform event.

"It's very exciting being the youngest. I've trained really hard for this. Going to the Olympics will be a dream come true for me," Wu told reporters.

Wu would replace Lourdy Wiggins (nee Tourky) as the youngest ever diving team member.

She is just 142cm tall and will compete for an individual spot on the team in the 10 metre platform dive on Sunday.

Cole, 24, also qualified for Olympic selection Friday with Sharleen Stratton in the synchronised three metre spring board event. That pair are ranked sixth in the world.

Cole and Wu are ranked third in the world in the 10-metre event.

Cole says they can beat a Canadian pairing into silver, at least, in Beijing.

"We didn't dive as well as we can against the Canadian girls at the world cup," Cole told reporters.

"There was only five points between us and we've beaten them before."

The rest of the Australian Olympic team of divers to contest the synchronised diving events in Beijing took shape Friday on day one of the three-day selection trials in Hobart.

The 2003 world champion pairing in the synchronised mens 10 metre platform event, Robert Newbery and Mathew Helm, also progressed toward Beijing Friday.

Newbery earlier qualified for selection with Olympic new partner Scott Robertson in the synchronised three metre spring board.

It will be the first Olympics for Wu, Cole, Stratton and Robertson if they complete the final requirement of selection.

The synchronised diving pairings must finish in the top five in one of two international diving events next month and record an Olympic qualifying score to make the Australian Olympic team.

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