Dear Charles,
When you set foot on the Galapagos islands in September 1835 you noticed the interesting wildlife and the diversity amongst the animals.
The differences between the at-first-sight identical animals on various islands would later lead to your book and Naturalists bible named "The Origin of Species".
Many people hold you in high regard because of it.
From your diaries though it seems you were appalled by the appearance of the Marine Iguanas that lived on isla Isabella.