I like to doodle around from time to time, and some of the pictures get published along with the science.
You can also find a small children book about evolution here:
The world of Hopfs. If you want to buy hardcopy you can find it on Amazon in English, German, French and Chinese.
For the Centre of Ocean Life I developed Otto the copepod, which is an interactive website that introduces kids to the different organisms in the sea.
Here is a small collection of some drawings and illustrations I made over the years. For more recent projects find me on instagram.