Tom Burke, 18, told media he furiously punched and kicked the shark after it attacked him while surfing off Flinders, in Western Port Bay, on Friday evening. The shark is believed to be a 1.8 metre Bronze Whaler.
He then paddled back to shore, scared the shark would come after him and too fearful to look at his wounded leg, believing it may have been bitten off.
"I just started feeling really weird, then I saw a big black thing come up. I just got ripped off the board," Burke said.
"I punched it as hard as I could, then I started kicking (it).
"I didn't really have a clue what was going on, it was surreal."
Burke told media he would never surf again.