What's at the bottom of the ocean floor? How do organisms survive their watery environments? And what non-native, or "alien" species can invade and disrupt native plant and animal life in a particular body of water? These are the kinds of questions marine biologists ask every day. Marine biology is a large field of science concerned with the study of ocean life. There are many specialities in the field, such as aquaculture, which is the raising of and caring for marine animals.
A marine biologist's average pay is between $35,000 and $40,000 a year.