Answer:
Oceanography
Step-by-step explanation:
Oceanography or the marine science studies the earth's oceans and seas. It includes tectonics in the specific ocean, water currents etc.
THERE ARE MANY BRANCHES OF THIS TOPIC:
Ecology: the study of plants and animals in the water body.
Chemical oceaography: study of chemistry of the oceans
Metorology: study of ocean atmospheric interactions.
Oceanography began in late 1800's in the oceanographic institution in united states. The first organisation was created in 1902 as the "International council" for the "exploration of the sea".