The shallowest ocean in the world is the Arctic Ocean. It has an average depth of 3,407 feet. The Arctic Ocean is the smallest of the Earth's oceans and covers about 3 percent of the world's surface area.
The second shallowest ocean is the Atlantic, with an average depth of 12,254 feet. The third shallowest, with an average depth of 12,740 feet, is the Indian Ocean. With an average depth of 13,740 feet, the Pacific Ocean is the deepest. The deepest place in the Arctic Ocean is the Eurasia Basin, with a depth of 17,881 feet. The deepest place on Earth is the Marianna Trench in the Pacific Ocean, with a depth of 36,200 feet.