What is the definition of marine biology?

Marine biology is the science that studies living beings that inhabit marine ecosystems, as well as the conservation of marine life, its biological elements, flora, and fauna.
Marine biology is the study of the biology of the ocean as a whole, describing living beings and their biological processes.
a) Only the first statement is correct.
b) Only the second statement is correct.
c) Both statements are correct.
d) Both statements are incorrect.