The United States Navy has a new tool in it's arsenal and it comes in the shape/appearance of a shark!!! Meet "Ghost Swimmer." 

The underwater drone moves without the use of a propeller and relies solely on a tail and fins to navigate through the water---much like a shark. This latest invention will help the U.S. Navy in uncharted waters and may even be used on spy missions.

While enemies of the United States may be on the lookout for submarines and other ships, I highly doubt that they are on the lookout for objects that resemble sharks. However, I ask, why would our country release such information if they wish for this drone to go unnoticed?

We should warn you, if you are out in the ocean swimming and you see fins approaching, NEVER assume its "Ghost Swimmer." Keep your guard up!!!