Situ that was sinking didn't dare take any risks.
After having experienced just the abilties of those Earth Realm experts, he was convinced they where no longer in the same realm.
But he had not seen the way that attack created an eighthy meter deep out with seven hunted meters if area was devastated. If he saw this, perhaps he might have sunked further if he experienced this.
He didn't know the abilties of those in the Earth realm, as such he continued to sink until he reached 15 meters.
At this point, the pressure was not small, but that was not important, he saw something that resembled a hole and approached it.
He couldn't continue to sink, it was not advisable for him. After all he also had to be wary of any dangers in the water.
Swimming towards the hollow side he didn't feel any danger, as such approached and his eyes were able to see clearly in this place.
He was someone that taken his physique to the Qi condensation realm as such he could see the cave clearly.