The evolution of Zerg

Muscle soreness after anaerobic production will cause the insect shark's overall movement to slow down.

The insect sharks were always walking around, wearing down Zhang Fan's patience.

Along the way, sea spiders and lantern fish appear again.

Don't worry about the sea spiders. The place here is relatively spacious and will not pose the slightest threat to the insect sharks. On the contrary, when attacking the insect sharks, they will be killed.

The trouble is those lantern fish. Just as Zero said, the lantern fish are extremely ferocious, and their spirit of fighting back is admirable.

Those big teeth look scary, but would be hard-pressed to cause harm to a bug shark.

When he first attacked, Zhang Fan was so frightened that he broke into a cold sweat.

The teeth of lantern fish are more like sieves. They often feed on small creatures and only attack enemies when their territory is invaded. They usually scare away enemies with their terrifying appearance.

However, I didn't expect that this time there would be a group of insect sharks who were also not afraid of life and death. This idea was very tricky.

After seeing the slight damage caused by the lantern fish to the insect shark, Zhang Fan's mischievous heart burst out.

He controlled the insect sharks not to bite the lanterns themselves, and specifically picked out their lanterns to bite.

Every time he bit the lantern, the lantern fish were in agony, and then Zhang Fan let the insect shark devour the lantern fish.

After breaking down the genes in its body, it was found that there was nothing worthy of praise.

After cleaning up the surrounding lanternfish, the insect sharks moved on.

The current in front became more and more turbulent, and the bodies of the insect sharks wandering in the sea became shaky.

"There seems to be a sea current ahead." Zhang Fan thought thoughtfully, feeling the flow of the sea water.

"Go and have a look." The insect sharks swayed their bodies and continued to move forward.

The more turbulent the water flow, the higher the concentration of oxygen in the seawater, and the insect sharks gradually regain their energy.

This is easy to explain. Just like a fish tank, if there is no oxygen rod, the oxygen in the water will gradually decrease, and eventually all the fish in the fish tank will die.

With the oxygen rod, water flow is formed, and oxygen will penetrate into the water. The rapid water flow brings oxygen in.

The flow of sea water was getting faster and faster. Zhang Fan couldn't control the bodies of the insect sharks, so he simply let go and let nature solve the problem.

After coming into contact with the control of the insect sharks, the group of insect sharks were suddenly pulled by the current.

Danger is everywhere in this underwater cave.

For example, Zhang Fan failed to control his rhythm and an insect shark accidentally floated above the water flow and was split in half by a stone pillar in front of him.

The stone pillar broke under a violent impact, and its sharp edges stabbed another insect shark.

This is not over yet, the stone pillar will be carried forward by the current, and the insect sharks have a very difficult time avoiding its attack.

Just one small stone pillar caused the death of four insect sharks.

Not counting the large rocks carried by the current, these rocks were even more threatening. They would cover the entire passage, and if caught, they would be smashed to pieces.

The bones scattered everywhere in the water are good proof.

The insect sharks tried their best to avoid all dangers, and finally saw the light again. The water there could no longer be described as water, but a torrent.

Under the action of the powerful suction, the insect sharks could no longer control their bodies and rushed out of the hole under the action of the spiral.

The crackling stones behind me hit my body very painfully.

After leaving the cave, Zhang Fan realized that this place turned out to be an ocean current zone.

Ocean currents are also called sea currents. In addition to tidal movements caused by tidal forces, seawater flows on a large scale along a certain path in the ocean.

This world has no moon, so gravitational tidal movements can be ruled out.

The main driving force causing ocean current movement is wind, or it can be the uneven density distribution of seawater caused by the thermo-salt effect.

To be clear, the ocean currents caused by temperature changes have a certain periodicity.

Ocean currents are the main regulator of the thermal environment on the planet's surface and can be divided into warm currents and cold currents. If the water temperature of the ocean current is higher than the water temperature reaching the sea area, it is called a warm current; if the water temperature of the ocean current is lower than the water temperature reaching the sea area, it is called a cold current.

Zhang Fan felt the temperature around him and guessed that this was a cold wave.

So speaking of it, this ocean current should be able to carry Zhang Fan towards the southern hemisphere.

"I'm really looking forward to it. I can finally go to the Southern Hemisphere." Zhang Fan thought excitedly.

However, ocean current movement is not absolutely safe. Many creatures in the ocean rely on ocean currents to migrate.

These insect sharks are just a drop of water in the pool at best, and they are not enough of a threat to the surrounding environment.

The biggest threat in this ocean current is the large tuna.

As can be seen from their name, this type of tuna is relatively hard and has a short and sharp horn on the top of its head, which is a bit like a swordfish. Zhang Fan guessed that this may be the ancestor of the swordfish.

The bodies of these tuna are golden yellow, the scales on the outside are as hard as steel plates, and the size is about the same size as an insect shark.

Tuna are invincible in ocean currents. They are like scavengers, cleaning up all the creatures in front of them.

Even giant molluscs that stray into ocean currents will be chopped into pieces.

Zhang Fan was relatively lucky. The insect sharks happened to be following behind the tuna, and there was a big boss in front of them to open the way, which could save a lot of energy.

There are also some small crustaceans in the ocean currents, and only these small creatures can avoid the charge of tuna.

These fish that slipped through the net can just replenish the physical strength of the insect sharks.

On the periphery of the ocean currents, there are also some creatures that specifically rely on ocean currents for prey. Zhang Fan calls them jet kissing insects.

This jet-kissed insect looks like a white ball when it is outside the ocean current. Once prey enters its field of vision, it will quickly squeeze the seawater in its body. This method is very similar to a cuttlefish spitting ink. .

After spraying the water, the body of the jet snout becomes very slender, and then it enters the ocean current to hunt.

Jet kissing bugs have super fast movement speed, and their attitude is decisive. If they fail to succeed in one attack, they will continue to leave the ocean current quickly without stopping for a moment.

They know that once they enter the ocean current and cannot get out, they will die in it forever.

Zhang Fan was also attacked by this jet-kissing insect, giving no time for the insect shark to react.

As long as you are stung by these jet kissing bugs, you will be immobilized by the coagulation factor in the kissing bug's body.

Then after being taken out, they will be devoured by other jet kissing bugs.

Along the way, Zhang Fan was attacked by various types of jet kissing bugs. There were several insect sharks, and Zhang Fan watched helplessly as they were torn apart by the kissing bugs.

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