One global ocean spans 71% of Earth's surface, covering a vast interconnected body of water. Geographically, this ocean is divided into five distinct regions, commonly called the world's oceans.

The Ocean Ridges are submarine mountain chain formed by plate tectonics. In other words, it is an underwater longest mountain range in the world. It demarcates the boundary between two plates.

Terms of Service and Privacy Policy. Earth’s oceans may not have always been as brilliantly blue as they are today. In fact, there may have been a time when they ...