Unidentified submerged object

An unidentified submerged object or USO, similar to a unidentified flying object (UFO), is an unidentified object found in water.[1][2][3]

References

  1. ↑ http://metro.co.uk/2014/10/21/mysterious-craft-off-coast-of-sweden-sparks-hunt-for-uso-unidentified-submerged-object-4914260/
  2. ↑ http://au.ibtimes.com/articles/567017/20140922/ufo-uso-aliens-space-unidentified-flying-object.htm
  3. ↑ http://www.huffingtonpost.com/2012/05/31/baltic-sea-ufo-hunters_n_1556150.html