Future Goals

As of now, I have no idea what I want my future career to be. All I know is that I would prefer it to be in marine biology. Being an Old Dominion university student I’m aware of the varieties of programs for students in this field. True as that may be, I still have no idea where to start. Do I ask my professors for guidance, or is this a topic I should discuss with my academic adviser? I may be in this situation now, but I know if I maintain my grades and never give up on my education my future is sure to be bright.