When hundreds of eerily perfect circles were discovered on the bottom of the Mediterranean Sea, theories abounded ... Still, the mystery only deepened. They captured video footage of the circles ...

The Russian cargo ship Ursa Major sank in the Mediterranean Sea. For years ... Read also: Russian cargo ship sinks in mystery explosion; crew rescued Russian naval convoy's secretive arms mission ...

A Russian cargo ship used to supply troops in Syria has sunk in the Mediterranean sea. The Ursa Major got into trouble while sailing between Spain and Algeria. Fourteen sailors were rescued ...

A Russian cargo ship used to supply troops in Syria has sunk in the Mediterranean sea. The Ursa Major got into trouble while sailing between Spain and Algeria. Fourteen sailors were rescued ...