After a number of years teaching in high schools and employment at the Gould League of Victoria and the Tooradin Marine Discovery Centre, Harry left the teaching service in 1988 to establish Nautilus Educational and now works as a childrens' natural history author, exhibit designer and environmental education consultant.

Harry lectures part-time in the Education Faculty at the Peninsula Campus of Monash University. He lectures in ecology, environmental science and science education.

He has also been working as natural history author, display designer and an environmental interpreter for the past 20 years.

During this time he has been employed at the Gould League of Victoria, the Department of Planning and Environment and the Department of Conservation and Environment and his own company - Nautilus Educational.

In 1980, Harry established the Tooradin Marine Studies Centre and highlights of his display work include the development and construction of the award winning Penguin Parade Visitor's Centre on Phillip Island (1988), the DCE Marine Education Caravan (1990) and Point Nepean National Park (1994).

His work in this area has been complemented by two study tours of aquariums, museums and national parks on the West Coast of North America.

Harry is a founding member of the Marine Education Society of Australasia (MESA) and has been national coordinator of Seaweek, a marine awareness program created by MESA. His main interests at Monash University are in the area of marine ecology and the development of marine education programs.

Scuba diving has been one of his major pursuits and on a number of occasions he has been fortunate enough to combine this interest with his professional involvement in conservation programs such as Operation Raleigh at Port Welshpool and Wilson's Promontory in 1987.

In December 1995, Harry Breidahl, came together to work for Nautilus Educational on the development of the World Wide Web site for Yarra Valley Water Education.

As an environmental educational consultant, Harry produced a range of educational material for Melbourne Water, including the Water in our Environment package which is a key component of the Yarra Valley Water Education site, developed in conjunction with Peter Biro and Roland Gesthuizen from Ed Online, now known as BriTer Solutions.

Harry has been actively involved in environmental education since 1977. Highlights of his work include:

• Harry is the author of well over 50 natural history books; including titles with the Gould League, Macmillan's Southern Cross Connections, What's the Difference and Science and Technology Encyclopedia.

• Display design and construction projects; including the award winning display at the Phillip Island Penguin Parade Visitor's Centre and the DCNR Marine Education Caravan.

• Curriculum development projects for Melbourne Water; including Water In Our Environment, Water Wise Schools and Water Watch.

• Natural history based tours, the most recent being a CAE tour of Fraser and Lady Elliot Islands.

• A regular visitor to schools as a writer or marine scientist. Highlights include the well-known Tooradin Writer's Weeks and Harry's 1992 work as scientist in residence at St. Margaret's School, Berwick.

For further information about Nautilus Educational, email Harry