- Pacific Ocean: The largest ocean in the world, covering more than 155 million square kilometers (about 60 million square miles).
- Atlantic Ocean: The second largest ocean in the world, covering more than 106 million square kilometers (about 41 million square miles).
- Indian Ocean: The third largest ocean in the world, covering more than 73 million square kilometers (about 28 million square miles).
- Arctic Ocean: The smallest and northernmost ocean in the world, covering more than 14 million square kilometers (about 5.4 million square miles).
