We have been sent the following links from Geoscience Education and Outreach Services of Australia:-
The Geological Society of Australia has a link on its resources page - scroll down and click on 'Tsunami facts'.
Geoscience of Australia also has a good tsunami site.
We were also sent more information about the booklet we mentioned in our post of 16th October. The article was published by the Australian Science Teachers' Association on 12th July 2005.