Appearance, it seems, is key to survival in the animal kingdom - with some species able to blend in perfectly with their surroundings, while others behave quite the contrary.
Take a look with Professor Innes Cuthill from the School of Biological Sciences at the University of Bristol.
Music: Believe Your Eyes, Pure Motion, Look Again, Micromovement, Open Water - courtesy KPM Music.
Slideshow by Paul Kerley. Publication date 3 April 2009.
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