(Thanks to Banxia Sadness 2000 starting coins for the reward!)

Minamino guessed that when the system was upgraded to level 5, he believed that the system would not give him the ability to upgrade his fishing grounds again. The www.biquge.info should give him a new ability upgrade! This is all his own guess in his heart, and it is still up to the system to decide what new ability he will upgrade when the time comes.

After washing up and eating breakfast, an hour later, Minamino Shuichi's fishing fleet arrived in the southwest of the sea.

The North Pacific Ocean is located between Asia and North America, between north of the equator and near the poles. It is connected to the Arctic Ocean by the Bering Strait in the north, and the sea surface temperature gradually decreases as the latitude increases.

In addition to being an important fishing ground, it is also a major shipping route in the world, and many cargo ships, cruise ships, etc., pass through the North Pacific!

When Shuichi Minamino came here, he had already found the fish he had found before, and by the time he arrived, they were gone. However, at this time, the system appeared again!

"Ding-dong...... Schools of bonito were found 9 nautical miles from the host due north, with coordinates of 155.8 longitude and 41.3 latitude. The number of fish is 4027!"

"More than 4,000 tuna!" "Nanno Shuichi gasped, my God, more than 4,000 of them. This is a super large school of tuna.

After receiving this powerful reminder, Minamino Shuichi immediately drove the fishing boat in the direction of due north, where the fish were. At the same time, he also switched visuals to see what this group of tuna was doing!

Soon after Shuichi Minamino switched his vision, he entered the seawater, and it didn't take long to find the location of the tuna. I saw that the depth of the sea here is about 1,000 meters deep.

A huge group of bonito is gathering in front of you!

"Shhh...... What is this!A tornado of tuna?" Minamino looked at the sight dumbfounded! I saw that in the sea in front of me, more than 4,000 bonito were swimming slowly in circles. They slowly rolled around, forming a tornado of fish made up of fish!

This tornado is seven or eight meters in diameter and tens of meters in length. It's like a tornado on land, except that this one tornado is in the water or made up of these tuna!

"It's spectacular!" Minamino Shuichi's eyes widened in disbelief, it was the first time he had seen such a shocking image.

"Aren't tuna swimming fast? Why are they so slow now? Shuichi Minamino said incredulously.

The tuna tornado in front of me slowly swept through the water, and the tornado composed of more than 4,000 fish slowly drifted along with the current. They are very slow, and it feels as if they are foraging for food and migrating, and it seems as if they are gathering together to exchange information. But what puzzled Minamino was that they were too slow.

Shaking his head, Shuichi Minamino couldn't figure it out, but it would be nice if this shocking fish tornado picture could be filmed, it was really shocking.

In fact, Shuichi Minamino did not know that the tuna spawning and migratory waters were affected by various natural factors. During the spawning period of tuna in suitable waters, the migration rate is very slow unless there is a sudden change in sea conditions.

Many tuna fishing experts are based on regular observation, understanding and mastering the direction and speed of the current, which is conducive to tracking and chasing fish and increasing catches.

Later, according to years of production practice, many experts found that tuna that gathers for bait has the rules and habits of drifting downstream and chasing and swallowing bait against the current.

The direction of the current is stable and the flow velocity is stable, that is, when the flow velocity is 0.5~1.5 knots, the central position of the tuna gathering bait does not change much, and the fish generally drift down the river for about 16,000 meters per day; when the flow direction is stable and the flow velocity is 1.5~2.0 knots, it is difficult for the fish catcher to track and pursue the fish. The currents change greatly or at the confluence of the currents, and there are many plankton and small fish, which is a fishing ground for tuna bait. Current direction and velocity have a significant impact on tuna longline operations.

Tuna migration can be divided into two forms: one is within the same current system, and local migration mostly belongs to the same ecological migration, but there are also different ecological groups. In this case, its migration is governed by the ebb and flow of ocean currents. The second is the transition migration between different current systems, which is caused by the needs of ecological changes in the fish body, which in turn prompts the fish to start to migrate automatically and actively.

Now Mizuno is encountering schools of tuna drifting downstream, so they are very slow, and they only drift about 16,000 meters a day. If it's a buck lure, they're going to swim frighteningly fast, which is one of the reasons why tuna can emerge from another ocean in a year.

Counter-current bait, many fishing masters in later generations took advantage of this feature to use drag off and trolling to catch tuna! Because this kind of trolling is a kind of retrograde bait. If you find those tuna, you'll be chasing them for food!

Don't underestimate ocean currents, if you can recognize them, they can be very useful for your pelagic fishing to find fish! They also prefer to drift with the currents in the shallow seas as they belong to pelagic fish.

For Shuichi Minamino, these experiences don't help him much, he has a system prompt to find, and he can just kill it.

"Now that you have such a slow-moving school of tuna, it's even easier to catch it with a trawl!" says Shuichi Minamino with a smile.

When the fishing boat approached, Minamino Shuichi saw at a glance that dozens of meters in front of him could see a school of fish on the surface of the sea, and there were also some tuna at the top of the tornado, and some tuna were spinning half a meter underwater.

He really wanted to ask if you guys didn't get dizzy when you walked around like this?

Just now he observed that there were also many small fish in the area where the group of bonito was, and they were lazily migrating and eating lazily. In fact, this is also a kind of transgender break.

The tuna can't stop all its life, and when it stops, it will die, it will suffocate to death! It has something in common with a shark. If a shark stops swimming, it will also suffocate.

"Get off the trawl!" said Shuichi Minamino to Yuki Ishida, who was beside him.

"Boss, have you found a school of fish?" Ishida squinted and snooze.

"Nonsense, hurry up! The fish are there. Shuichi Minamino pointed with a finger.

"Boss, how did you find out?"

"Hehe, of course it's based on experience, you see that the currents here don't ......" Minamino Shuichi began to talk nonsense with his eyes open again, but this time he was really right.

When the trawling nets were lowered and the tuna schools were rounded, the 4,000-odd skipjack tuna were still swimming slowly with the gentle current.

Trawling nets that are tens of meters wide and tens of meters long and tens of meters high are directed towards the school of bonito.

The fishing boat is fast, and so is the trawl!

In the next second, the trawl port suddenly came to the front of the fish. At this time, the huge trawl is like a sky-swallowing beast that bites into the school of fish in one bite.

The first part of the bonito was swallowed without reacting. The bonito in the back immediately noticed that something was wrong and began to flee in all directions.

The tornado of huge schools of fish scattered all at once.

Shuichi Minamino switched his vision and stared closely at the movements of the fish, generally driving a fishing boat to chase after him.

The originally slow bonito was chased by the trawl net, and its speed accelerated in vain, and it continued to flee for its life.

"Hmph, don't try to escape, big troops!" Shuichi Minamino had increased the speed of the Falcon to its maximum, and the fishing boat rushed left and right, closely following the large school of bonito.

"Whoosh!"

The tuna in the sea is so fast that it scurries around like bullets. But under the huge trawl net shrouded in pursuit, there was no chance of escape. Some bonito even ran back stupidly, only to crash headlong into the net and die.

Minamino's pursuit lasted more than half an hour before it was over.

Of the more than 4,000 bonitoes, he only caught about 3,000, and about 1,000 escaped. There is nothing that can be done about the part of Shuichi Minamino that escaped. Whoever called the tuna is too fast. This time, he was also satisfied with the catch of about 3,000 fish.

The next step is to start the net!

After 3,000 bonito are lifted out of the water, there is a large net of dense fish! Because of the large number of fish, the crane is running under load.

It is impossible to lift so many fish to the deck at once, so you have to hoist half of the nets and put them on the water, and then the sailors use harpoons or small nets to drag the bonito up to the deck one by one for bloodletting.

It is necessary to wait until the weight is reduced before the trawl can be hoisted onto the deck in one go.

Bonito weighs tens of kilograms each, which is much easier to handle than large tuna. The other three fishing boats also came close to help deal with the situation.

After four hours, nearly 3,000 bonito fish were processed!

"Boss, there are so many tuna schools caught this time, and I have caught so many tuna at once, and I am very busy. Old man Oda wiped the sweat from his forehead. Don't look at this old man as an old man, but he doesn't have to be a young man to do his work.

"yes, it's too much!" Shuichi Minamino was also tired. He has been helping with bloodletting, disposing of internal organs, either squatting or bending over, and he is really tired.

"Okay, it's already afternoon, take a little rest, we'll put longline fishing in the evening, and get up tomorrow to fish. In the morning, we will continue to set off in search of fish!" said Hidekazu Minamino.

"Yes!"

Catching tuna is something that makes Minamino Shuichi hate and love! Tuna is valuable, and of course he likes it. What he hates is that every time he catches tuna, he has to bled and clean up the internal organs. It's just too time-consuming. And every one of them has to be treated like this, otherwise it will affect the quality and quality of the fish. (To be continued.) )