Key Takeaways
The Atlantic Ocean is the second-largest ocean in the world, covering an area of about 106.4 million square kilometers
The average depth of the ocean is about 3,330 meters (10,930 feet), with the Puerto Rico Trench being the deepest point at 8,376 meters (27,480 feet)
The Atlantic Ocean has several underwater mountains and valleys, including the Mid-Atlantic Ridge, which runs through the center of the ocean