Walford had been a school chaplain and pastor at the Cathedral of Praise church in Rockhampton, Queensland.
Donna Kirkland, his local MP, said she was in shock, and that Walford was a friend to her and “countless others.”
“My prayers and heartfelt condolences are with his beautiful family and indeed the many who will be devastated, as I am, at this news”, she added.
A family friend told ABC News he had watched the rescue helicopter fly over his house, unaware it was for his friend.
“I always say a little tribute for whoever it may be, but to find out it was Luke was a very sad day,” Doug Webber said.
Queensland police said a report would be prepared for the coroner.
Australia’s last fatal shark attack happened in December 2023, when a teenage boy was killed in the south.
Just this year, there have been four other shark incidents in Australia, according to a local database.
In general, Australia sees more shark attacks than any other country except the US.