The killer whale (Orcinus orca), also referred to as the orca whale or orca, and less commonly as the blackfish or grampus, is a toothed whale belonging to the oceanic dolphin family, of which it is the largest member.iller whales are apex predators, meaning that they themselves have no natural predators. They are sometimes called the wolves of the sea, because they hunt in groups like wolf packs. Killer whales hunt varied prey including fish, cephalopods, mammals, sea birds and sea turtles.
  Marine Biology is studied because we want to know more things about marine mammals and fish. Also to get to know the eco-system and the life of fish. With-out marine bio â¦ logy we will not know anything about the ocean and what lies beneath it.3 people found this useful.he first degree you would get to become a marine biologist is a Bachelor of Science in Marine Biology, or a Bachelor of Science in Biology with an emphasis in Marine Biology. â¦ for further degrees you would need to go to graduate school to get your Masters in Marine Biology.
1 An agronomist specializes in soil and crops. 2  An astronomer studies stars, planets and galaxies. 3  A botanist specializes in plants. 4  A cytologist specializes in the study of cells. 5  An epidemiologist studies the spread of diseases. 6  An ethologist studies animal behavior. 7  A geneticist studies how traits are inherited.