Although the previous experience was extremely dangerous, Xu Kun obtained an extremely important piece of information, which is that he can strengthen his own genetic fragments by obtaining crystals from high-level life forms.

The effect of using crystals to enhance genes is much higher than before. What Xu Kun wants to find out now is whether he can break through the current upper limit of gene enhancement and strengthen gene fragments to

Level 4?

Xu Kun swam forward while thinking. Since the mutant diving spider's swimming speed is slow and its endurance is relatively poor, it keeps walking and stopping.

Xu Kun estimated that the total time of their march was almost fifteen hours, but the distance traveled should be less than 200 kilometers.

At this time, the diving spider couldn't swim anymore, and Xu Kun and the skeleton lizard had to stop and rest.

During the previous parade, Xu Kun occasionally saw some mutant creatures living in the sea. In addition to the mutant jellyfish he saw before, he also saw some huge sea ammonites and moray eels.

This has to make Xu Kun wonder whether this underground river leads to a certain ocean?

While Xu Kun was thinking, a huge mutant water snake swam from a distance. He knew through the ability of the animal business card that it was a highly venomous mutant ancient cup snake, which is an ancient sea-dwelling snake.

The emergence of the mutated ancient cup snake basically made Xu Kun clear on two points of information:

1. This underground river is indeed connected to the ocean;

Second, they should not be too far from the estuary now;

Xu Kun and his party laid down an ambush. When the mutated ancient cup snake entered the ambush circle, the mutated diving spider immediately attacked. It entangled the mutated ancient cup snake tightly with its spider silk, and then the skeleton lizard opened its mouth to bite the mutated ancient cup snake.

The neck of the ancient cup snake was directly bitten to death.

Next, Xu Kun and the others began to eat. After enjoying the food, the mutated diving spider regained some strength. They swam forward for almost twenty kilometers with all their strength, and then light finally appeared in front of them. After swimming for a few kilometers, they swam underground.

An underground river appeared on the surface, and Xu Kun and the others finally came to light again.

Xu Kun looked up and saw yellow sand filling the sky on both sides of the river. It turned out that this place was still within the scope of the desert. What was unbelievable was that adjacent to the desert was a vast ocean!

At this time, Xu Kun and the others were not far from the mouth of the sea. What now makes Xu Kun wonder is, how big is this secret realm? Why does the ocean appear? Who built this secret realm?

Although Xu Kun has many questions in his heart, no one will tell him the answers. He can only rely on himself to uncover the answers bit by bit.

About half an hour later, Xu Kun and the others finally entered the sea from the estuary. After going around in a big circle, Xu Kun returned to the ocean. Although many things happened to Xu Kun during this period, his feelings about the sea were still there.

But it has never changed.

Returning to the ocean is like returning to the place where dreams began. Xu Kun couldn't help but recall those little moments in the shallow sea.

No matter how far he goes, Xu Kun always remembers the shallow sea in his heart. Although this is not a shallow sea, the familiar feeling when entering the sea is the same. For a moment, Xu Kun was so moved that he almost cried. If he had

In terms of lacrimal glands.

"Well..."

Suddenly the cry of some kind of giant beast came from the distance. Xu Kun followed the sound and saw a huge wave of water suddenly rising on the ocean about one kilometer away. A huge monster more than a hundred meters long jumped out of the ocean and glided in the air.

Several hundred meters later, the huge body like a mountain of meat crashed down heavily.

"Boom!"

There was a loud noise, and the ocean surface stirred up turbulent waves.

Xu Kun quickly obtained the basic information of the giant beast through the ability of the animal business card:

[Name: Neptuneosaurus (mutated)]

[Type: Mosasaurus]

【Life Level:3】

[Body length: 108 meters]

【Weight: 1000 tons】

[Special ability: breath (not yet fully awakened)]

Although the gene bank rated the Neptune dragon just now as a Level 3 life form, Xu Kun knew that it should be a quasi-Level 4 life form, even stronger than the Styx jellyfish he saw in the shallow sea cracks.

.

Xu Kun knew that the mutated Tritonosaurus he just saw was not the strongest in the ocean. There should be fourth-level or even fifth-level life forms among them.

The existence at the top of the food chain in this ocean is so terrifying! When Xu Kun first entered the ocean, he was still affectionate, but the reality gave him a wake-up call.

Now Xu Kun understands that this is not a gentle town, nor a safe haven. This is a "hell aquarium" full of crises and killings. If you are not careful, you will fall into a place of eternal disaster!

While Xu Kun was thinking about it, he saw a group of foraging Balsbordiasaurus coming from the direction of the desert. There was some kind of salt-alkali-tolerant mutated fern growing on the coast, which was their favorite.

This group of Balsberdiasaurus are in normal physical condition and have not been infected by the zombie mold. It seems that the infection has not spread from the canyon yet, which is definitely good news for Xu Kun.

If the zombie mold continues to spread, will it affect the ocean? If so, we need to consider how to escape.

While Xu Kun was in a trance, the panicked roars of the group of Balsbordia dragons were heard in the distance, and they hurriedly fled the coast as if they had seen a ghost.

It turned out that when this group of Balsbordiasaurus was foraging on the coast, they were attacked by a mutant Deinosuchus.

The huge mutant Deinosuchus bit the neck of an adult Balsbordiasaurus and then dragged it into the water and drowned.

Seeing this, Xu Kun couldn't help but smack his tongue. This place is indeed the "Hell Aquarium". It seems that he has to hunt down a Deinocrocodile to suppress his shock.

I saw that after the mutant Deinosuchus killed the Balsbordiasaurus, it did not eat immediately, but swam along the coast with the prey in its mouth.

Xu Kun estimated that this mutant Deinosuchus was preparing to bring food back to its nest to enjoy, so he followed it from a distance with the Skeleton Lizard Diving Spider.

After swimming for about two or three kilometers, Deinosuchus suddenly entered an underwater cave. It seemed that this was where its lair was.

Xu Kun carefully detected it with an inductor. The entrance and exit of the nest was below the sea surface, but there was a gentle slope after entering the nest. Climbing up the gentle slope, there was a stone platform above the water.

Xu Kun used his color-changing ability to hide his figure, and then quietly swam into the Deinosuchus's lair. Only then did he discover that there was a female Deinosuchus inside.

After the male Deinosuchus climbed onto the stone platform with the body of Balsbordiasaurus in his mouth, he shared the prey with the female mutant Deinosuchus.

There are two mutant Deinosuchus, one female and one male, living together. It seems they are ready to lay eggs?

If it is not difficult to hunt down one mutant Deinosuchus, then hunting two mutant Deinosuchus is more difficult for Xu Kun and his party.
Chapter completed!