The evolution of Zerg
Chapter 109 Antarctica
What Zhang Fan is most curious about in the Antarctic Circle is a creature called the crocodile ice fish.
It looks a bit like a crocodile, but is much smaller than a crocodile. The whole body is also transparent and feeds on small creatures.
When Zhang Fan saw this creature for the first time, it was eating and completely ignored the giant beast that swallowed the sky.
This cute crocodile ice fish is also a vertebrate, but it has evolved a circulatory system that does not require heme to survive.
It can directly extract oxygen from the ocean to meet its own needs, and its heart is much larger than that of similar fish.
It is worth mentioning that due to polar temperatures, the oxygen content in this sea area is much higher than other places.
Therefore, most of the sea creatures here breathe directly through their skin or through special gills.
These little guys are not necessary for Zhang Fan, they just look better.
If the gene is really useful but has not been seen, for now, the crocodile ice fish still needs oxygen to breathe, but Zhang Fan's troops can completely change the breathing method.
Beyond the crocodile ice fish, Zhang Fan also saw the salp, which is also a creature with a transparent body.
It looks a bit like a jellyfish, but can be seen through the skin and is more like a spinal creature.
Salps reproduce very quickly, and Zhang Fan saw the salps randomly discharge their eggs outside the body, leaving them to fend for themselves.
Salps resemble a sharp sword, but this sword seems motionless. They are more about sharing body resources with the next generation.
Other fish or marine organisms rarely use them as their main food, and they have no nutritional value. Ninety-seven percent of their bodies are water.
In addition to salps, Zhang Fan also saw the largest swarm in history, a krill swarm.
Krill are very small, only a few centimeters, but when gathered in such numbers they are quite scary.
Zhang Fan looked at the large group of krill in front of him and estimated that there must be tens of billions of krill.
Just in time, the krill can replenish some physical strength for the sky-swallowing beast.
The Sky-Swallowing Beast approached the krills, opened its mouth, and sucked hard. The krill fell into the Sky-Swallowing Beast's mouth one after another as if they were out of control.
Then, the sea wolves in the body will kill the krill in the mouth and drag it into the stomach of the sky-devouring beast.
The sky-swallowing beasts kept devouring the krill, and there was no trace of krill in this area.
When other creatures came over and didn't see the krill, they turned away and continued to look for food in order to survive.
In the sky.
The Devouring Beast arrived at the very center of Antarctica.
The vast expanse here is the sea, and there is a lot of broken ice on the sea. It is summer in the southern hemisphere.
The northern hemisphere has once again fallen into a cold winter season, but the current cold winter has no effect on Zhang Fan. He is still doing whatever he has to do. The worker bees are still busy collecting materials.
Some broken ice has formed on the Devouring Beast's body, and the surrounding flying dragons are helping it clean it up.
The host also brought the fungus carpet over to feed it. After eating the snacks, the Devouring Beast continued to patrol with a large force.
The troops were all eating, and Zhang Fan was thinking about the dangers of Zero in his spare time.
It is better to believe that there is something than to believe that there is nothing. Although Zhang Fan remains wary of Ling, since he has been warned, he might as well listen to it for the time being.
Don't be self-righteous and think that now that you are invincible, you have nothing to fear. You must know the story of how there are people outside the world who want to have heaven outside.
Okay, let’s move on.
The marine resources here are very rich. In addition to some necessary marine life, there is also some natural flammable ice.
Combustible ice is a natural gas hydrate, an ice-like crystalline substance formed under high pressure and low temperature, which ignites when exposed to fire.
Zhang Fan has also discovered these flammable ices in the Arctic, but the amount is not as large as in the Antarctic.
There are two reasons. One is the temperature issue. Zhang Fan's long-term observation found that the sunshine time in the northern hemisphere is much longer than that in the southern hemisphere.
This causes the temperature in the Antarctic to be generally lower than in the Northern Hemisphere.
If it were not for the regulation of sea water temperature, the entire southern hemisphere would be plunged into ice and snow.
Zhang Fan guessed that the current ice age should have a greater impact on the southern hemisphere than on the northern hemisphere. He planned to stay here first and observe the specific weather conditions here.
In fact, Zhang Fan has a plan in mind. He wants to establish a combustible ice mining base here. This combustible ice may be used in the future.
Time passes again.
During this time, Gaia had begun building tunnel worms.
Tunnel worms in the ocean and tunnel worms on land go hand in hand.
Let’s talk about the tunnel worms on land first. Because the worms have a strong ability to dig holes, during this period Gaia first asked the worker bees to dig holes into the mountain peaks that blocked the road.
Some landslides are unavoidable. Although many worker bees were killed, the work still had to continue.
With passion, Gaia personally entered one of the caves to observe what was going on inside.
In this regard, Zhang Fan also severely criticized Gaia for not cherishing life. You should know that the resources consumed by recreating a brainworm have increased again.
Recreating a single brainworm can build more than a hundred invincible armadas.
Gaia exited the cave in frustration and ordered the worker bees to go explore. Geographic knowledge also grew rapidly at this moment.
The strength and density of each rock layer were studied, and then some genes that could be used were searched in the incubation pool.
First of all, the appearance must be strong, absolutely strong, stronger than the Sky-Swallowing Beast or the Thunder Beast, otherwise it will not be able to support the collapse of the cave.
In this case, fusion genes are needed, but Adam is doing all this work, and Gaia is a little embarrassed.
In the end, it was Adam himself who came over to express his hope to help Gaia, and Gaia accepted Adam's help politely.
It is based on annelids, but on this basis it must also have the ability to proliferate, otherwise it cannot meet the needs of the tunnel.
So, the two brainworms and Zhang Fan worked together to create the first tunnel worm.
Let’s not talk about the growth of tunnel worms for now. It’s possible that tunnel worms can grow indefinitely. As long as there are enough resources, they can grow to outer space.
Therefore, in order to control its elongation, it was specially designed as a dormant creature.
It will sleep if it doesn't eat, and it will grow if it eats.
The excretory organ of the tunnel worm is on the skin, and it disperses some of the excreted substances on the surface of the skin to form a protective film of the exoskeleton.
The effect was good. Gaia's experiment dropped a large rock from the air, but it only cracked its shell. This is how the design of the land tunnel worm was completed.
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