The course of the two-person swim is dozens of kilometers from the coast of Honshu Island, away from the crowds, and they can enjoy the tranquility of the sea freely.

It didn't take long for the tranquility to be shattered, though, because a huge school of fish was standing in their way.

It is a school of fish made up of sardines. Thousands of sardines form a huge school of fish that is several kilometers long and nearly a kilometer wide, and the sea is obscured by the fish, and the light on the bottom of the sea is so dim that it is impossible to see what it looks like in the morning.

Tian Xu's olfactory imaging can basically see the whole picture of the entire fish, but Ziyan can't see such a scene. When she heard Tian Xu talk about the huge size of this school of fish, she couldn't help but be fascinated, and she also wanted to see the appearance of this huge school of fish.

The two jumped out of the sea, urged the flight formation, and quickly rose to a height of nearly 10,000 meters. If you look down from the sky, you can see the shape of the entire school of fish at once.

Like a slender dark cloud, the fish spread vertically on the surface of the sea, slowly changing shape as they move northward. Behind the fish, flocks of seabirds chase the footsteps of the fish, enjoying a once-in-a-lifetime feast.

Because of the presence of fish, the two were worried that the satellites in the sky would notice this, so they turned on the stealth mode, and their speed also decreased. But with their speed, they are still much faster than the fish, and there is no difficulty in tracking the fish. They could see dozens of fishing boats waiting for more than a dozen nautical miles ahead, ready to catch this huge amount of sardines.

At this time, the sharp-eyed purple smoke noticed some abnormalities behind the fish, and some of the fish at the edge emitted abnormal restlessness, and a small group of fish was separating from the large school of fish and forming a mess. Tian Xu hadn't seen anything yet, Ziyan's eyesight was outstanding, but he had already seen some cyan backs interspersed among the fish under the surface of the sea, and he was trying to separate this small group of fish from the big fish.

After listening to Ziyan's guidance, Tian Xu focused his olfactory imaging here, and found that those cyan backs in the water were some big fish. These large fish have smooth, streamlined bodies and swim beautifully and efficiently, turning out to be a large pod of dolphins. There are more than 100 of these dolphins, and maybe 200 of them. Dolphins are expert swimmers and fishers, chasing schools of fish for a good meal.

There is nothing to see about the fishing boat in front of you fishing under satellite navigation, but the large group of dolphins in the back is a rare thing that should not be missed, and the two of them certainly do not want to miss it. So they lowered their altitude and headed for the dolphins behind the fish.

When the height of the two dropped to about 1,000 meters, they found that a group of big fish chased after the dolphins and joined in the work of dividing the fish.

This is a group of blueback sailfish, their bodies are significantly more slender than dolphins, with long spear-like pointed beaks growing on their heads, and when dividing the fish, the wide dorsal fin on their back will open and cut through the fish like a wide cyan flag, putting a huge pressure on the fish, and the efficiency of dividing the fish is higher than that of dolphins.

They lowered the height even more, and the dolphins and swordfish were able to divide the school more clearly, and the sailfish were much smaller and smaller than the dolphins, but they shared the same workload as the dolphins. Thanks to the concerted efforts of these efficient trappers, a school of fish with a diameter of nearly 100 meters was finally separated from the larger school. Dolphins and swordfish rush into the school, driving and dividing the small school of fish into smaller swarms and devouring them one by one.

Sensing the tension and danger, the sardines with big eyes nervously search for the location of predators, while using the lateral lines on both sides of their bodies to sense the changes in the direction of the current around their bodies, trying to maintain the same direction and speed as their companions, and trying not to separate from the large group while avoiding predators.

This is the magic weapon of sardines to save their lives, in the big school, thousands of fish swim in the same direction, and the glittering bodies are like a huge mirror array composed of small mirrors, making the predators dizzy, and finally saving a small life in this tense process. If they are scattered, they are no match for these powerful predators in terms of speed, reflexes, and strength, and can only pray that the predators are busy eating and eating so that they can spare their own lives. The synchronized movement of large schools of sardines undoubtedly increases their chances of survival. Dolphins and sailfish, on the other hand, are trying to drive sardines out of the school of fish so that they can hunt for food.

Seeing that dolphins and swordfish have begun to chase and devour the fish, the birds in the sky are also driven by ancestral instinct to concentrate on this small school of sardines and swoop into the water like dumplings. Seeing the posture of these seabirds swooping one after another, a word appeared in the hearts of the two at the same time - scrambling.

The two dive into the water again to watch their fishing show up close.

The situation beneath the surface of the sea has become a pot of porridge, and the clump of frightened sardines, the seabirds that rush under the water and swim with their wings and feet to chase the sardines, and the dolphins and swordfish that flash by from time to time and fly by, have turned this place into a hodgepodge of chaos, and the bubbles of air float to the surface, making the chaos even more disorderly.

The seabirds, in particular, do not rush into the water with a single blow and then return to the surface immediately, as we imagined, but chase sardines like penguins underwater. With their long necks and limbs moving in unison, they look clumsy and eccentric, but they are frighteningly efficient, swallowing more than one fish into their stomachs almost every time they enter the water. Underwater they look more like the legendary plesiosaur, meandering and swimming underwater until a minute or two later, when the air stored in their bodies is exhausted, before they rise to the surface and then try to take to the skies for a new dive.

Tian Xu and Ziyan were swimming more flexibly and quickly than these fishing animals, looking for the right angle, striving to see the fishing movements of these animals more clearly. They had no interest in these sardines, and just swam around to watch. But they are similar in size to seals, and sardines also use them as predators, and schools of fish swirl around them like a gust of wind, and before they collide with each other, thousands of fish will turn at the same time, passing them in great danger, and the schools of fish are very closely aligned, and the simultaneous turning action is so smooth and dazzling that it is dazzling. The parade in the secular world, known for its uniformity, is much rougher and clumsier in front of these sardines. The school of fish is like a whole, tightly surrounding the two of them, leaving only a blank space several meters in diameter around them, which is clean and clean, not even a single fish scale, and the sea water is so clear that it is like a world away from the chaos a few meters away.

In this chaos, Tian Xu's olfactory imaging sensed that in the deep sea below, another group of diners had arrived.

The newcomers were about the same length as the industrious swordfish, but they were round, thicker than dolphins, with slender but knife-hard pectoral fins, dorsal and caudal fins, and two large eyes on their heads. He quickly recognized the true identity of the group of bargain pickers, a school of tuna, bluefin tuna, and the largest tuna.

It is said that these bluefin tuna are cheap guys, because they are quite fast, definitely not slower than sailfish, the reason why they appear at this time, is not just to arrive, but in the deep sea waiting for the opportunity, waiting for dolphins and swordfish to finish the work of driving the fish, and come out at the most opportune time to grab food. This group of tuna is generally about two meters long and weighs at least 200 kilograms.

In this feast, Tian Xu has no interest in sardines as food, or dolphins, swordfish, and seabirds as predators, and has been looking for a better angle to watch as a qualified spectator. Ziyan was in a similar mood to him, and he was also there to watch the excitement. But when facing this group of tuna that had just arrived, Tian Xu's mood was completely different, because these tuna aroused his appetite.

He searched among the huge group, taking advantage of the opportunity to assess the fat and flesh of each one, and tried to choose the best one among them. It would have been very easy for him to do this job with his domain, but the speed of this school of tuna, which has more than thirty of them, and only a small amount of time will enter his field, makes his evaluation extremely difficult.

Tian Xu became anxious, and the launch field left all the tuna that entered it here, and soon, dozens of big guys were concentrated within a range of more than twenty meters around him, making his domain space a little crowded all of a sudden, and the few tuna that were not caught in his domain had realized the danger and began to consciously stay away from him, and the smart dolphin had already withdrawn from his domain and ran away to a place a hundred meters away.

Tian Xu didn't want the three tuna that had not entered the realm to slip through the net, so he condensed three formations and caught the three big guys one by one from dozens of meters away, and then began to select them with satisfaction. I don't know if I don't choose, the one with the best meat quality is really one of the three that he caught later.

He left the unlucky ones he had chosen, let go of the rest of the tuna, and the one that was left behind was put into the Medicine King Bucket at once.

The process of catching the fish went quickly, and it was completed in less than a minute. But when he paid attention to his side, he found that there was a large area around him, and the big fish that were predators were far away from him, while a large school of sardines discovered his ability to drive away the enemy, and they all gathered around him for protection.

Tian Xu was a little surprised, he was surprised by the cleverness of these sardines, they were able to find a chance to survive in such a short period of time, and seize it in time, which made Tian Xu admire it so much.