- Historic Period: 300 BCE – Ancient Greece
Oceanography is quite an interesting field, much different from other marine fields. One of the most unique scientific techniques used by ancient people, oceanography is the study of the oceans and their properties overall. The ancient Greeks and Chinese developed early forms of this. The first known written record of research in this field dates back to the Greeks, around 300 BCE. The field covers pretty much everything related to the ocean in a huge macro concept. This will involve the study of marine life and ecosystems and the movement of sediments to even how currents and waves operate.