It is unlikely that any being in the void universe can reach these depths. Even the Apex entities of the void universe will not be able to go further. But anyone who manages to survive and push forward will find that there is nothing at the base of this ocean apart from a barrier and a pillar.
It is not a disappointing sight at all even though it is questionable if any being in the void universe can see or hear anything here. Their senses will surely be still functional if they can survive this depth. But their surroundings will be too chaotic to make sense of. There is nothing to perceive that can be understood except the pillar.