There is a Vaikunthaloka covered with water in the material world, which is an inestimable distance away in the direction of the Makara Rashi (Shravana Zodiac) or the Capricorn Constellation, and on that planet, is a place called Vedavati, where Vishnu resides.
Kshira Sagara is said as the birth place of supreme Trimurti god Vishnu. Kshira Sagara is hindu mythological place which is surrounded by pure water with powers of millions of stars, universe,constellations, etc.￼ It is said to be the hidden heaven in earth there are lots scripts in Ramayana and Mahabharata, And it is also mentioned in tamil and sanskrit scripts. Kshira Sagara is the underground mysterious place. Which is connected with time and space.