On his YouTube channel LikeZOO! Prof. Dr. Anton Mole presents his own Interactive Audio eBook series: The Incredible Tales of Prof. Dr. Anton Mole on iBooks.
He also explains how iBooks works and what the difference is with other eBooks. The series are interactive Audio eBooks.

Click on the titles of the eBooks and go to iBooks to download them:
Part 1 An Incredible Tale (FREE)
Part 2 The First Hippo
Part 3 The Final World Championships