NASA and the Oceans of Ceres

The presence of significant amounts of water ice in its composition[81] and evidence of recent geological resurfacing, raises the possibility that Ceres has a layer of liquid water in its interior.[22][127] This hypothetical layer is often called an ocean.[14] If such a layer of liquid water exists, it is hypothesized to be located between the rocky core and ice mantle like that of the theorized ocean on Europa.[22] The existence of an ocean is more likely if solutes (i.e. salts), ammonia, sulfuric acid or other antifreeze compounds are dissolved in the water.

WIKIPEDIA- CERES