Dogs 'swimming with sharks' on Australia's coastline
21 July 2011 Last updated at 18:10 BST
Sharks are usually considered to be the most fearsome predators along Australia's coastline. But recent footage shows they have some unlikely rivals - dogs.
The footage of the two dogs, called Kerr and Budjerlung, apparently chasing sharks in Western Australia has become an internet sensation.
Andy Moore reports.
Contributors in this piece: Wossy Davey, Dog's owner