Despite the low visibility and complex terrain and the abundance of aquatic weeds, the fish are hiding here and are difficult for predators to spot, but in the microscopic identification of the digital field of view, this group of spiky manta rays is still nowhere to be found.

Rows of data and annotations slide through the field of view, removing useless information such as sea temperature, brightness, sea flow speed, etc.

The digital field of view not only marks the location of each manta ray, but also projects their outline on the retina.

Without alarming the big fish, Evan quietly returned to the surface. Treading water slowly under your feet, you gently adjust the position of the raft and move it directly above the center of the manta ray school.

Taking a light breath, he thrust the four or five large rocks carried on the raft into the sea, and then quickly took out a long, thick piece of iron and an iron rod from his backpack, and Evan followed the stones back into the water.

Underwater.

The moment Ai Wen entered the water, he held the iron piece in one hand and the iron rod in the other, and slammed it together with all his strength. Stones fall much slower in water than in air, while sound waves travel much faster in water than in air.

"Jingle Bell, Ding Bell, Ding Dong ......"

Almost at the same time, a loud noise fell on the heads of the group of manta rays, along with the stones.

Frightened by the sudden "attack", invariably, the spikes behind the tail of a group of timid manta fish instantly turned red, raised high and shot out violently.

After the fins stir up the currents, stirring up a large cloud of sand and dust on the bottom of the sea, the school of manta rays disappears without a trace.

Ai Wen floated on the surface of the sea, waited for the sand and dust to settle completely, and then dived to the bottom of the sea, and sure enough, he found three or four red spikes lying quietly on the bottom of the sea. As for the others, I don't know where they were launched.

It's done!

Ai Wen was overjoyed, originally just with the idea of giving it a try, but he didn't expect this clumsy strategy to really fool them.

Directly hands, without any accidents, two long and two short four red spikes were harvested.

As an auxiliary material in the preparation of pharmaceutical agents, this spike is not used in large quantities, but it is irreplaceable. Now with these gains, there will be no need to worry about stockouts for years to come.

"Anyway, I went out to sea once, and by the way, I also collected other materials needed for the Black Sea Elixir. The raw materials of the Black Sea medicine can basically be found in the Black Sea area, and I hope that there will be something to be gained today. ”

Since the store didn't open in the morning, Evan decided to spend the day here. Strive to find all the parts of the potion recipe that are so strange that it is almost impossible to buy them in the drugstore.

So Aven began to repeat the process of diving-watching-returning-changing places-diving again. It has to be said that the biological resources of this sea area of Leopold are very rich, and by the afternoon, the six-pointed blue starfish, three unique seaweeds, and the black sea urchin have been found one by one.

And the last remaining master material is... Shark teeth.

Evan didn't see it this time, well, he didn't want to see it in the sea anyway, especially when he was alone on a raft.....

Because in the waters of Leopold, sharks are caught by fishing boats from time to time, so just go to the dock and wait at that time. Even if there is no fresh one, you can find it directly in the nearby place where the fish is disposed of after the catch is discarded, but the effect is only a little worse.

The collection task is largely complete.

It's just that to Aven's surprise, there are still a lot of "surprises" in the process of collecting raw materials, beautiful shells, rusted copper keys that I don't know who has, and a small fiery red coral, and even a few pearls that are not in good condition.

Although it is not worth much, it gives him a different kind of satisfaction. In high spirits, Ai Wen already has the posture to turn the journey of collecting medicine into a treasure hunt.

Searching continuously, before he knew it, Aven had moved away from the original waters, and the color of the water had quietly deepened.

"Whew!"

Having gotten out of the water and glancing at the skewed sun, Evan decided to dive one last time and return to the sea with or without a catch.

The perennial knight's breathing exercise has allowed Evan to hold his breath underwater for much longer than ordinary people, and the diving depth is much deeper. It allows him to go to places that ordinary fishermen can't reach.

Willing to test his limits, holding on to a rock, Aven descended the ever-expanding seabed. It is not until the field of vision is gradually limited, and it is only possible to barely see with the help of a data-based field of vision.

Extraordinary strength could not allow Evan to stay underwater for a long time, and seize the time to search for possible "treasures".

Even though the sun is no longer visible, in addition to the reef and gravel on the seabed, there are still marine fish and crustaceans of different colors and shapes roaming among the reefs. The transcendent world clearly makes for the tenacious life that goes with it.

"What's that?"

Soon, under the guidance of the digital vision, Aven found a shell through a crack in the reef, a shell larger than a pumpkin.

The shell was overgrown with all kinds of parasites, and it almost became one with the reef next to it, and if it weren't for the help of the digital vision, even if he passed by, Evan wouldn't have been able to spot it.

Take the dagger tied to the lower leg in your hand, insert it through the gap in the shell, and pry it vigorously. A soft pearl flowed out, one, two, three... A total of three black pearls, one large and two small, were picked out by the dagger.

Although Ai Wen is not very knowledgeable about the jewelry of this era, he still has basic common sense. Even according to the lowest estimates, these three excellent black pearls are worth at least a hundred golden lions.

And according to the prices of this period, a six-year-old military horse in its peak condition is worth only a hundred golden lions. A sturdy military horse is more face-saving for a knight than owning a mid-to-high-end sedan in his previous life.

Taking the income of ordinary people as an example, a noble attendant who is considered a high-income group generally earns three silver oxen a month, which can be converted into a golden lion.

As you can imagine, this is a lot of wealth.

Suppressing the joy in his heart, Evan carefully put the harvest into the small pocket around his waist, and threw away the stone to resurface.

A somewhat forgetful Evan apparently forgot that he was at the bottom of the treacherous sea, not a well-serviced jewelry store.

The upward momentum was stopped by a sudden slight tightening of the ankle.

Ai Wen thought he was entangled in seaweed, but he didn't break free when he struggled hard, and his heart chuckled.

Grunt...

Evan looked back, and was shocked and almost let out a breath in his mouth.

A huge octopus with a body as red and brown as a reef had lurked beside Evan at some point, and it was a thick wrist and foot that was more than three meters long that wrapped around his ankle.

Suddenly encountered, Ai Wen did not struggle in vain like ordinary people, and the training he received since childhood told him that if he panicked before facing an enemy stronger than himself, the outcome was doomed. This is true when facing the ferocious bobcat, and it is also the same when facing the big octopus today.

The big octopus was obviously an impatient, and after entangling its prey, the other wrists and feet clinged to the reef and slowly dragged Evan down, as if they were going to drag him to the deep sea and drown him and then enjoy a big meal immediately.

At the critical moment, one by one, the methods of getting out of my head popped out of my mind and were quickly rejected.

But no matter how fast the thoughts in my head are, they can't be as fast as the body of a trainee knight who has been tempered and has formed a fighting instinct. Driven by a strong survival instinct, Evan did not resist the drag of the big octopus, but instead used this force to kick the reef and recoil downward.

Because he knew that he could not outrun this cunning predator at the bottom of the sea, and the only way to survive was to kill it!

Although the big octopus is very smart, he can't guess what is going on in Aiwen's mind, and when he sees him swim over, the rest of his tentacles are all open, just waiting for the prey to reach his mouth, and then feast on it.

With the help of the recoil, Aiwen, who was very close to the big octopus, had already seen the terrible mouthparts like a bird's beak in its tentacles, and did not dare to hesitate any longer, his strong and powerful legs swung hard, and his body accelerated again.

Before the big octopus's outstretched tentacles could react, Evan had already pressed it to its head, making close contact with its fist-sized yellow eyes.

Suction cups on the wrists and feet, pigmented plaques under the skin are clearly visible.

The corners of his mouth were slightly upturned, and the dagger in Aiwen's hand had been sent between the eyes of the big octopus without hesitation, which was also where its nerve center was located.

Huh-

Without a big octopus struggling behind him and waving its tentacles, Evan rushed towards the water. If he waited another half a minute, he wouldn't need the big octopus to eat him, and he would have drowned at the bottom of the sea.

Rushing out of the water and climbing onto the raft, Aven did not forget to carefully pack all his catches, picked up the oars and ran away as if he were paddling towards the beach.

The ocean is too dangerous for me now, and a little away from the shallow beach is almost fatal. But Evan firmly believes that one day he will be able to conquer this vast Black Sea, and even explore the more magnificent and fantastic scenery in the distance!