What was Darwin's first career?

Darwin's first career was as a naturalist, which began with his role as a ship's naturalist on the HMS Beagle during its voyage from 1831 to 1836. He studied various forms of plant and animal life, collecting specimens and making observations that would later influence his theories on evolution. Before this, he briefly studied medicine at the University of Edinburgh and later theology at Christ's College, Cambridge, but his passion for natural history ultimately defined his career.