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CGI rendering of a USO emerging from the ocean.

A USO (unidentified submerged object) is any apparent anomaly underneath the sea that cannot be identified as a known phenomenon. The term "USO" was born when alleged sightings of extraterrestrial spacecraft underneath the sea began to surface.


In general: UFO · USO

Media: Derelict · Tripod · Alien Attacker · City Destroyer · Independence Day Mothership · Furon Mothership

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