My second favourite profession I would have gone for if I had the choice when I was young? Marine archaeologist.
I just mention this because in the past half-year I was haunting the now closing Sunken Cities: Egypt’s Lost Worlds exhibition of the British Museum which told the story of Thonis-Heracleion and Canopus, two cities that sank into the Mediterranean Sea (in Aboukir Bay, previously only known to me as the place where Nelson defeated the French). The site is being excavated by the team of Franck Goddio – the marine archaeologist who seems to get to excavate all the best sunken things in the world. (This is envy speaking.)