After determining the deepest diving depth of the Companion Spiritual Treasure, Zachary began to examine its current state.

The changes to the Companion Spiritual Treasure following its evolution weren’t significant; merely one entry had altered, and another had been added.

The entries it possessed before the evolution were: Disperse, Floating, Energy Gathering, Transparency.

After the evolution, the Companion Spiritual Treasure’s entries became: Aquatic Affinity, Floating, Energy Gathering, Transparency, Submersible Navigation.

The original effect of Disperse was to drive away the aquatic creatures, ensuring that these creatures would not approach the Companion Spiritual Treasure.

However, this repelling effect only worked on creatures with lower intelligence or that were timid; some of the smarter aquatic creatures would make judgments based on the aura emitted from the Companion Spiritual Treasure.

If they sensed an aura stronger than theirs, they would keep their distance, but if the aura appeared to be on par with their own strength or weaker, they would take it as a challenge and angrily initiate an attack.

Unlike Disperse, the effect of Aquatic Affinity was to reduce the hostility of aquatic creatures toward it, ensuring that the vast majority would not initiate an attack.

The most significant difference between the two was that after using Disperse, aquatic creatures would not actively approach, but with Aquatic Affinity, one could observe these creatures at close range without being attacked.

There’s no need to mention the added Submersible Navigation entry; after all, this was the evolution branch chosen specifically for this effect.

Zachary originally intended to delve into the depths to investigate, but now he had made a new discovery. If Zachary remembered correctly, right after the flood disaster started, there were Martial Artists involved in underwater salvage work.

Even though Zachary had personally participated in this work, he had obtained some understanding; because they dived in minimal gear, he remembered the depths were only about a hundred meters, with some areas even less than that.

After all, China is an inland city, and the elevation of many cities is actually above the sea level. In theory, even if the floodwaters spread, they should not submerge the cities.

However, he should still be within the boundaries of China, yet for some reason, a dive to about a hundred meters, which would have reached the ocean floor initially, now showed no sign of how far he still was from the ocean floor.

This situation could only mean two possibilities—the first being that Zachary was currently in a low-lying basin in the inland, which was originally below sea level, so naturally, the depth here would be much greater than elsewhere when the flood came.

The second, which Zachary felt was more likely, was that the water level had increased significantly without anyone noticing.

After all, post-disaster, all the survivors relied on various boats to stay afloat, and with no landmarks like islands on the vast expanse of water, the survivors could not be aware of any changes in the water level.

In fact, either scenario would not significantly affect the current Zachary, who was leisurely navigating underwater with his Companion Spiritual Treasure; a question suddenly occurred to him.

It’s an issue that most people would overlook, and that is the problem of oxygen. Under normal circumstances, even the largest submarines would use the amount of carried oxygen to determine their underwater navigation time.

Yet within the Companion Spiritual Treasure, Zachary had not seen any oxygen generation equipment, nor any storage for oxygen.

However, he had been underwater for quite some time without feeling short of oxygen. Through communication with the Companion Spiritual Treasure, Zachary finally understood the reason.

Having forsaken so many choices and ultimately opting for the Submersible Navigation trait, obtaining the ability to breathe underwater was naturally indispensable.

The evolved Companion Spiritual Treasure did not lack the oxygen generation device; instead, the ability had been integrated with its shell. Thus, as long as the Companion Spiritual Treasure was in the water, it could like a fish, exist indefinitely underwater.

Although this ability was not displayed within the Companion Spiritual Treasure, Zachary wasn’t surprised upon discovering it.

Just as Zachary was checking if the Companion Spiritual Treasure had other unseen abilities, his body suddenly shook.

Zachary immediately sensed that the Companion Spiritual Treasure had either collided with something or had been hit by something.

With the thought of being in the deep water where any accident could complicate his escape, Zachary immediately used his Divine Sense to see what had collided with the Companion Spiritual Treasure.

However, as Zachary expanded his Divine Sense, he suddenly noticed something strange—the Companion Spiritual Treasure had inexplicably grown much larger.

It’s true that Zachary had expanded the Companion Spiritual Treasure from the size of a helicopter cockpit to a size comparable to a pre-disaster submersible tourist boat that could seat five or six passengers, all by feeding it Mysterious Cores.

But now, as Zachary extended his Divine Sense to its maximum, he realized that even at full stretch, the Divine Sense was still within the Companion Spiritual Treasure, not reaching the outside.

There were only two possible explanations: either Zachary’s Companion Spiritual Treasure had indeed grown many times larger for some unknown reason.