Archaeologists rejected about mega-tsunamis hitting Australia 10,000 years back

Archaeologists have rebuffed a theory by geological researchers that Australia has been subject to prehistoric mega-tsunamis up to 20 m in height over the past 10,000 years.
According to a report in The Australian, in 2003, geological researchers suggested that ancient tsunamis over the past 10,000 years were much larger than those recorded since European settlement.
This theory was based on findings of shell and coral deposits in a 2,500 km stretch of the WA (Western Australia) coast, supposedly caused due to tsunami surges up to 20m in height.

But now, archaeologists from the Australian National University (ANU) have rejected this theory, saying that deposits might be a result of Aboriginal occupation.

Our field work would suggest that the shell and coral deposits found high on headlands in WA or further inland are evidence of Aboriginal occupation of the area, and not deposits of mega-tsunamis or other major inundations, said ANU researcher Dr Tony Barham.