Came across this interview with Dean and 'Tim the Yowie Man.'
Dean asked Tim what was the most interesting 'mysterious' case he has come across. His immediate answer was the sea serpents off the coast of north west Australia.
'Unbelievable" he said. It's more evidence to show these creatures have survived through the ages. They were regularly seen in the old days from sailing ships. Today's monster ships with their huge throbbing engines would be heard and felt kilometres away and would probably scare these denizens of the deep back from whence they came. No doubt that's why they are rarely seen these days. However, small fishing boats still provide some sightings.
Watch it here: https://www.youtube.com/watch?v=bIonNxs0rMM