One of the most significant developments in the history of naval warfare was the submarine. 

The submarine offered a means of stealth and surprise that surface ships couldn’t compete with. 

At first, navigating submarines was relatively simple, as they traveled just below the surface and used a snorkel and a periscope.

However, as submarines improved and could dive deeper, they encountered a problem. How could they see and navigate?The answer came from nature.

Learn more about SONAR, how it was developed, and how it works on this episode of Everything Everywhere Daily.

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