Simon Nellist died in the attack on Wednesday off Little Bay in Syndey. It was the first fatal attack in Sydney for 60 years.
The 35-year-old diving instructor grew up in the west Cornwall village of Ludgvan before emigrating.
In a statement, his family released a tribute calling him a “wonderful human being” and “very talented photographer”.
They added: “Simon was a gentle, kind and wonderful human being. He was a cherished fiancée, son, brother, uncle and friend.
“Simon was funny, compassionate and always had time for people. He had a rare gift of instantly being able to connect with others, gaining their trust and respect.”
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“We heard a yell and turned around, it looked like a car had landed in the water, a big splash then the shark.”
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