The fear of death diluted Nelly's joy at discovering the wall carving.

She didn't stay where she was for long, and after the photo was taken, she continued to swim forward, but the story on the wall carvings didn't end there, and although Nelly forced herself to focus on finding her way out, she would also glance at the wall carvings around her from time to time.

It can't be helped, unless her gaze goes straight ahead, she will always catch a glimpse of those wall carvings while looking for a way out.

The dive computer showed that she was now at a depth of 35 meters, which was nearly ten meters deeper than where they usually dived, in other words, an additional atmosphere, and the compressed air in the cylinder was consumed faster.

At the same time, the content of the wall carvings has changed from romantic to eerie, and the grown children return to the sea, and then come together, in large numbers, and they follow two leaders, one of whom is a mermaid like them, but much larger, and the other a giant serpent with nine heads.

Speaking of Hydra, in addition to a famous villain organization in the Marvel Universe, the most famous is the monster Hydra in Greek mythology, of course, this is also an out-and-out villain.

And this seems to be reflected in the wall carvings, where the merfolk, led by the Great Fishman and the Hydra, make waves in the sea, perform strange and disgusting rituals, and lure the nearby natives to trade fish and a gold-like thing with the natives in exchange for the right to bond with the natives.

These merfolk attach more importance to reproduction than they can imagine, but they can't combine with each other for unknown reasons, so they can only lure humans, and even disguise themselves as pirates to attack some seaside towns and kidnap people there if necessary.

After that, the wall carving looked at Nelly a little disgusting, and there was no romantic feeling.

But what really scared her was the next few wall carvings.

Above that, the merfolk prayed and summoned something to disorient the pearl divers underwater, and then lured them to their nests to reproduce for them.

When she saw this, Nelly was really shocked into a cold sweat, and a huge panic hit her like a tide, although those wall carvings had no color, but of course Nelly knew what those mermaids had summoned.

That's right, it's the sudden red tide outside.

In other words, she is now experiencing the same thing as the pearl divers on the wall carvings, although Nelly knows that the most important thing in underwater danger is to be calm, and she has always said this to the divers she brought, but at this moment it is really difficult for her to maintain her composure, and the hand holding the flashlight can't help but tremble.

Being forced to unite with those monsters was undoubtedly even more terrifying than dying here, and Nelly didn't even want to go any further, even though her gas cylinder was only 60 bar left.

As a professional diver, Nellie knew that every second of delay she was here would diminish her hopes of returning to shore, but even then, she couldn't move now.

Especially after waiting for her to come for a long time, and then took out a flashlight and flashed at her, Neli's brain was completely occupied by fear, and she subconsciously turned around and fled.

But the thing could obviously see Nelly's reaction as well, and then it saw a black shadow quickly swim towards the other end of the tunnel, it was much faster than Nelly, and with a graceful kick of its flippers in the water, the current automatically parted from its side, and it sprang behind Nelly, but it did not immediately attack Nelly.

Instead, it slid past Nelly and came to Nelly's face, and as it went, it even turned its head and gave Nelly an eerie smile, causing the latter's heart to almost stop.

And when she saw the appearance of the thing clearly, Neli almost screamed directly.

But then Nelly saw the rock next to the monster and suddenly stretched out an arm, grabbed the fin on its back, and then pressed the monster's head against the rock.

The ugly monster, half-human, half-fish frog, was obviously bewildered by the sudden turn of events, especially after hitting its head, and the grim smile on its face froze there.

However, because of the resistance of the seawater, it was actually not injured, and at the same time, the collision also aroused the ferocity in its bones.

While staring at the rock with its legs, trying to get out of trouble, it waved its hands behind it, trying to use the sharp nails of its fingertips to deal with the attacker, but the guy behind it was obviously moving much faster than he expected, and Zhang Heng had already jumped onto the monster's back when it was just knocked and was still dazed

After that, the other hand poked the sharp stones picked up on the road directly into the eyes of this monster, and blinded one of its eyes on the spot, and without waiting for the other party to react, Zhang Heng quickly solved the other eye, so that the monster fell into darkness completely.

The pain made the latter quickly roll in the water, and even Zhang Heng on his back was thrown around, and the two even hit the stone wall on the side.

Nelly was stunned by the sudden turn of events in front of her.

She had already recognized that the person who saved her was Zhang Heng, but she didn't know how the latter appeared here, Zhang Heng's appearance was even more sudden than that monster, before when Nelle didn't feel that there was someone behind her, and obviously Zhang Heng had persuaded her not to let her continue to chase the beam, but now he also appeared here.

However, Neli also knew that now was not the time to dwell on this kind of problem, although Zhang Heng had abolished the monster's eyes as soon as he came up, he was obviously in some trouble at this time.

If it was on land, Zhang Heng, who had just pointed the assassin skill to lv3, had no less than a hundred ways to easily deal with the half-human, half-fish frog monster in front of him, but underwater, especially in the absence of weapons, every action was like a slow-motion replay, and if he wanted to cause damage to this monster covered with scales and thick skin, it was a little difficult to rely on the pure natural weapons he picked up on the road.

Fortunately, Neri, who was on the side, also noticed this problem and hurriedly threw the diving knife on her body.

A dive guide like Nelly with a dive knife is not meant to fight in the water in most cases, but is able to deal with special situations where she gets tangled in seaweed or nets, and she didn't expect it to come in handy at this time.

Zhang Heng did not choose to get rid of the entanglement with the monster, because the latter is now in a state of madness, if Zhang Heng chooses to get off its back at this time, there is a high probability that he will be injured by this monster, he just consciously guided the direction of the other party's struggle, and then successfully picked up the knife thrown by Neli.

Before the monster slammed into the stone wall again, he plunged the knife into the other man's heart!

The sharp stainless steel metal was much more lethal than the rocks with uneven edges, easily piercing the monster's skin, and the monster struggled a few more times, and the nearby water seemed to become more scarlet, but soon the half-man, half-fish frog monster struggled less so hard that it could never move again.