You'll need a free VRML plug-in for your Internet Browser such as Cortona to view the 3D Bertie Bat model. This can be downloaded by clicking on the following link.

Click here to download the Cortona plug-in

(http://www.parallelgraphics.com/products/cortona/download)

Click the image or here to view  the 3D Virtual Reality version Bertie Bat

Please note, the model also contains 6 user selectable pre-defined views.