Aboard the Beagle Darwin served as?

Aboard the HMS Beagle, Charles Darwin served as the ship's naturalist during its voyage from 1831 to 1836. His observations and collections of specimens, particularly in the Galápagos Islands, greatly influenced his theories on evolution and natural selection. The journey provided him with critical insights into biodiversity and the adaptation of species to their environments, forming the foundation for his later work, "On the Origin of Species."