The Hebrew in Genesis 1:2 that is translated as «(the) deep» in English is translated in Luba-Lulua as «a very deep hole in which there is water.» (Source: Jan Sterk)
In the Swabian 2007 translation by Rudolf Paul it is translated as Urmeer or «primordial ocean.»
See also John Roberts’ Biblical Cosmology: The Implications for Bible Translation in Journal of Translation 2013/2, p. 1ff .