Following are a number of back-translations as well as a sample translation for translators of Joshua 15:12:

• Kupsabiny: “The western boundary was the great ocean.
  This is the boundary of Judah of the land they lived in.” (Source: Kupsabiny Back Translation)
• Newari: “The western boundary was the shore of the Mediterranean Sea.
  These are the boundaries assigned clan-by-clan all around the tribe of Judah.” (Source: Newari Back Translation)
• Hiligaynon: “which is also the boundary to the west.
  Those are the boundaries around the land which (was) divided among the families of the tribe of Juda.” (Source: Hiligaynon Back Translation)
• English: “The western border of the land that was allotted to the tribe of Judah was the Mediterranean Sea. All the clans of Judah lived inside those borders.” (Source: Translation for Translators)