I'm in search for a career that is 'earth' related. I also have interests in the ocean. So, my choices come down to; Earth Sciences & Marine Biology / Oceanography. Was looking for a career in the space industry, or renewable energy, but found most of it to be engineering based. And I don't think id like that. 1) If I take EARTH SCIENCE in my undergrad, can I take MARINE BIOLOGY / OCEANOGRAPHY for my Masters? - In the end, I would be working by studying the OCEAN, and its inhabitants. --OR-- Would I be better off focusing my studies on MARINE BIOLOGY / OCEANOGRAPHY in my undergrad right away? 2) If Its fine to take EARTH SCIENCE as my undergrad, what is the best university within Southern Ontario? (Unless there is a university elsewhere within Canada that is cheaper, and living is not more expensive either) 3) If I take MARINE BIOLOGY / OCEANOGRAPHY as my undergrad, is it a wise idea to study this in Guelph? (Doing it because its close to home). Or should I move away to the West coast or preferably East coast (Cheaper in the East)?