8. Entomologist

And you thought you’d be dealing with bugs on land, eh? The U.S. Navy and other ocean-bound companies work to prevent on-board and in-port infestation as well as research diseases, pesticides, and strategize quarantines.

Get hired: To get into this field, you will need graduate-level coursework in entomology or something closely related. Supplement your classes with computer science, statistics, and environmental health to round out your program.