It has been 186 years since Charles Darwin collected the samples of the Galapagos Islands species that led to his explanation of how the diversity of life on Earth has evolved and forever changed the way we understand the world.
During his five-week stay on the islands, Darwin collected dozens of samples, including one small, light brownish-grey snake on Floreana Island. That sample, now at the Natural History Museum in London, was the basis for describing a new species, the Galapagos (Floreana) racer.