On Saturday afternoon at approximately 1.30pm, Harrison Williams, from Quinns Rocks, near Perth in Western Australia, swam to the body of the deceased humpback whale and sitting on it.Despite several tiger sharks and at least one white shark circling the whale's bloated carcass, Mr Williams, an extreme sport lover, made the perilous swim over.The 26-year-old said that it was a spur of the moment decision, and he didn't think through the consequences of his actions before he climbed on top of the whale.‘At first I couldn’t get a grip and I ended up using my chin to drag myself up,' Mr Williams told 7 News.‘I was out on a boat with the boys and one of them said it would be pretty funny if I surfed a whale so I just did it,' he explained.Footage shows Mr Williams on top of the rotting whale carcass while his friends on the boat call out to him in a panic to tell him that there were sharks in the water around the dead animal.He said that he was aware of the sharks, but didn't realise how dangerous his actions were until after he had climbed up.‘He [the shark] was too busy chomping on the whale so it wasn’t too bad,' he said.Despite this, Mr Williams said he would not do it again if given the chance.'I’ve done it, I don’t need to do it again,' he said.‘It was definitely a stupid act but I didn’t mean any disrespect to anyone. Mum thinks I'm an idiot, and Dad isn’t too proud either.'Maritime authorities have said that Mr Williams won't be fined as the whale was already dead and he didn’t remove any part of the animal.On Sunday fisheries officers were monitoring the whale to ensure that it was not interfered with again, and the carcass drifted towards Scarborough, just off the coast of Perth.Mr Williams had earlier told Daily Mail Australia that he had climbed on top of the whale because the animal looked like it was in trouble.'Basically the whale looked in distress and I tried to help it. But clearly I was too late [sic],' he said.The whale has reportedly been in the ocean for several weeks, floating between Rottnest and Fremantle off the Western Australia coast.Western Australia's Surf Life Saving warned that several tiger sharks and at least one white shark were in the water surrounding the 12 meter long whale.(dailymail.co.uk)Bakudaily.Az