New video of 'idiot' who surfed rotting whale surrounded by great whites

An Australian man who risked his life in a bizarre stunt to surf a dead whale carcass while sharks encircled has admitted that even his parents think he is an idiot.

Harrison Williams, 26, of Perth, was out on a boat off the coast of Fremantle with some friends yesterday when he noticed a dead whale floating in the water.

"One of my mates said it would be pretty funny to surf the whale, so I did it," he told Seven News.

Mr Williams said he wasn't deterred by several tiger sharks and a great white that were encircling the whale at the time.

After jumping from their boat, he climbed on top the half eaten whale and 'surfed' it until his mates brought the boat in close enough for him to jump back on-board safely.