The thermocline is actually a natural dividing line of sea water. Generally speaking, because the sea water near the sea surface is exposed to sunlight, it will have a certain temperature. The further down, the lower the temperature of the sea water.
It is precisely because the temperatures of shallow seas and deep seas are different, the pressure and density of the two are also different, so after the seawater reaches a certain depth, this natural dividing thermocline will appear.
But the general thermocline will only appear at about 100 to 200 meters underwater, or about 500 to 700 meters underwater. If this appears at about 10,000 meters underwater, I'm afraid it has to be called " Super" thermocline.
As an immortal cultivator, Xiao Hua naturally knows that there are still many unknown secret realms in this world that have been sealed by ancient cultivators. There must also be many weird creatures in the secret realms. Don't be surprised!
But this place has nothing to do with the seal. It is simply a lost prehistoric world. But why can this strange "super thermocline" block his own spiritual thoughts? Xiao Hua was a little confused again.
But Xiao Hua didn't allow Xiao Hua to think too much. This prehistoric megalodon had already swam up to Xiao Hua, opened its big mouth full of fangs more than one meter long, and "ouch" it said in one bite.
This megalodon is not a monster or a savage beast, but the bite force of this shark can reach a terrifying more than 20 tons. If an ordinary creature is bitten by it, it will not die but will be seriously injured.
Although Xiao Hua is an immortal cultivator and has a sword and shield on his body, Xiao Hua does not dare to resist the more than twenty tons of bite force. When he activates the blister traveling technique on his body, "swish" drags a long stream of small blisters. , dodged above the megalodon.
The megalodon missed the attack and swam forward, quickly turned around and rushed towards Xiao Hua again, opened its big mouth, and said "Ouch" again.
Xiao Hua dodged again, and a series of small blisters appeared on his body, but this time Xiao Hua did not dodge above the megalodon, but dodged under the megalodon, and stretched out a sword light from his hand. forward.
Just "poof", this giant tooth shark, which was more than 20 meters long, was disemboweled by Xiao Hua.
The surrounding seawater was soon dyed red with the blood of the megalodon, and the megalodon immediately hung sideways in the water. Although this kind of megalodon is ferocious, it is not a monster or a savage beast after all, and its body is not strong.
Xiao Hua originally didn't want to kill it, but if he didn't kill the shark, he wouldn't have time to find the Spirit-Gathering Grass. Since the shark wanted to die on its own, Xiao Hua could only help it.
However, Xiao Hua had just killed the giant tooth shark, and from the dark depths of this forked cave, seven or eight more biological auras roughly the same as the giant tooth shark came immediately.
"Isn't this the megalodon's lair?"
Xiao Hua was stunned again. Don't worry for a long time. This fork is full of sharks. Wouldn't it be in vain?
Thinking of this, Xiao Hua immediately turned around and returned the same way. Since the fork on the left was the megalodon's lair, he could only go to the right fork to try his luck.
Sure enough, not long after turning around, Xiao Hua felt that the newly swimming megalodons were ferociously eating the megalodon he had just killed.
This cold-blooded animal is a cold-blooded animal, and without intelligence means without intelligence.
Of course, this is a survival law of nature and one of the laws of heaven and earth for all things.
Not long after, Xiao Hua returned to the fork in the undersea cave. Without hesitation, he activated the "Bubble Traveling Technique" on his body and entered the fork on the right.
After walking around in the cave for seven or eight minutes, Xiao Hua suddenly discovered that there was a bright light above the water.
Xiao Hua couldn't help but feel a little nervous. This was more than 10,000 meters deep on the seabed, and it was still in a cave. How could there be light? Is this place really a sealed space with monsters or other practitioners inside?
Xiao Hua quickly used his spiritual mind to scan the water surface where the bright light came from, but after scanning for a long time, he did not find any aura of life, so Xiao Hua carefully emerged from the water.
"Damn, how could this happen?".
As soon as he surfaced, Xiao Hua was stunned by the sight in front of him.
The forked cave on the right was not completely submerged by the sea. There was a piece of land above the water on one side of the cave. Many plants grew densely on the land, including flowers, grass, and even small trees.
In the middle of this open space where plants grow, there is a blue crystal stone the size of an egg suspended.
Xiao Hua was so happy that he immediately jumped out of the water and came to the open space. He ignored the blue gemstone suspended in the air and ran directly to the plants to look for the "Spirit Gathering Grass". This is what he came here for. the goal of.
Sure enough, hard work paid off. Among these plants, there were not only the Spirit-Gathering Grass, but also more than ten plants. The ones with the least medicinal age were two to three thousand years old, and the one with the longest medicinal age was close to ten thousand years.
Xiao Hua couldn't help but feel ecstatic. Although the Spirit-Gathering Dust extracted from the Spirit-Gathering Grass can only be used to conquer the nests of groups of spiritual insects, the longer the Spirit-Gathering Grass is, the more spiritual insects it can control.
That is to say, the spirit gathering dust refined with the thousand-year spirit gathering grass can control thousands of spirit insects at the same time. The spirit gathering dust refined with the spirit gathering grass of ten thousand years can control ten thousand spirit insects at the same time. Only.
This was definitely an unexpected surprise. Xiao Hua did not hesitate. He took out a brocade box and put away the spirit-gathering grass that was nearly 10,000 years old. He also posted several spirit-calming talismans on the brocade box. But good stuff.
After collecting the Spirit-Gathering Grass, Xiao Hua carefully inspected the plants in the open space, and also discovered a rare elixir called "Purple Beard Wood" that had become extinct in Xiaolingtian. The age of the medicine was close to 10,000 years old.
It seems that this underwater cave with land has existed for at least tens of thousands of years.
Xiao Hua was very excited. He suddenly discovered that another benefit of being an immortal cultivator is that he can explore treasure hunts and experience surprises in places that ordinary people cannot go. Maybe this is a joy of life for an immortal cultivator.
After checking all the plants, Xiao Hua began to study the blue crystal stone suspended in the air.
This blue crystal is not big, only the size of an egg. At first glance, it looks like an unpolished sapphire, but the amazing thing is that this blue gem actually emits a trace of blue smoke visible to the naked eye. .
"Wow, what kind of treasure is this?".
Xiao Hua subconsciously took two steps forward and reached out to get it.
At this moment, the ground under the gem suddenly flashed with blue light, "buzzing", revealing a hidden magic circle pattern, and a dark blue transparent barrier immediately appeared around the gem.
"Huh? It's actually protected by a magic circle? Hiss, does that mean this thing is a treasure?"
Xiao Hua was a little excited. He didn't expect to find treasures when looking for the Spirit-Gathering Grass. This was really unexpected. However, he hadn't stepped on dog poop for a long time, so why did he still have such bad luck?
