'Penguin-cam' gets up close and personal
9 February 2013 Last updated at 10:39 GMT
Wildlife producer John Downer demonstrates how he and his team went about making a documentary about penguins.
In order to get close to them he deployed 50 special cameras disguised as rocks, eggs and penguins.
Penguins - Spy in the Huddle can be seen on Monday on BBC One at 2100GMT in the UK.