Looks like Ceres (large dwarf planet) has liquid ocean.
As reported on website ZME Science. NASA Space Probe, Dawn, since 2015 has been making observations/images of the planet's surface. Its been noted the planet's surface is active with cryovolcanic eruptions (frozen water). The scientist have review data from the probe again, revised what probe reported, which is indicated the presence of hydrohalite rock formations on the surface. hydrohalite is translated water & rock salt. The hydrohalite is unstable, thus the probe's instruments show what is likely fresh material on the surface.
It's believe there a salty ocean under the surface or something to that effect.
This is a image that was used to measure the gravity of the planet, thus giving suggestive indication what under the surface of the planet.