Here is a full story of a shark attack :

Diver fights off shark in Sydney Harbour
http://www.abc.net.au/news/stories/2009/02/11/2487992.htm

And the name of the diver:

Navy diver Paul Degelder loses hand in shark attack
http://www.news.com.au/dailytelegraph/story/0,22049,25038935-5001021,00.html

The man was attacked off Garden Point in inner Sydney. (AAP: Greg Wood)