The panel on the right contains a video of some giant tortoises.

Watch the video carefully, looking out for any differences between the tortoises.

Click the buttons under the video to play, pause, stop, rewind and fast forward as required.

Click 'ENLARGE' to see a larger version of the video (note: this may take longer to download). Click 'NORMAL VIEW' to return to this page.

When you have watched the video, click through the tabs at the top of this panel: 'Inform', 'Question', 'Challenge' and 'Hypothesise'. The 'Links' section has some useful websites to help you with your research.