The day after I find the new diving spot, I returned there. This time, I get all the pearls I couldn't get yesterday and store it on the empty island so I could finish my job faster and explore the sea as much as I want today.

I grabbed a lot of giant seashells, even more than yesterday. Then I put them in that empty island, and go back into the sea.

There aren't many sunken ships, and most of them are just fishing boats. So I can only look for something other than valuables from ships. And most of what I found, are giant seashells with a lot of pearls inside of them.

Although Sam would be mad at me for only finding pearls, it should be okay. We can just tell our clients or business partner that it's difficult to find other treasures underwater.

In fact, I'm more confused about how I could easily find a lot of treasures in the previous spot. That area must be a path used by sailor to go to another location. And there's a lot of danger in that area in the past, and that's why there are many sunken ships of merchants under there.

But now, that area doesn't have many sea monsters. And that's why I'm moving spot. My goal is to improve my summoning level after all.

And so, I dived into the water to seek for powerful monsters, but not too powerful that I can't handle. And seeing how there are a lot of fishes here, if I report this to the guild and find the reason why all those fishing boats sunk, I would be rewarded by the guild. Then I will gain achievement, and it would be easier for me to build a clan by then.

That's right. I gave up on persuading others to not build a clan, or ask them to not let me be the leader. They are too persistent in having me as their leader. It's not like I have a great leadership or anything like that, it's just they thought it's a pain in the ass to be the leader of the clan. So they choose me as the leader.

And now, back to swimming.

There are more fishes here, and also a lot of sea monsters as well. But they are all not that strong. Once they leave the sea, they won't be able to do anything. And I don't think that they can cut the net thrown by fishermen. This place is a good spot to go fishing.

But I won't tell anyone yet. At least until I kill those killer dolphins first.

Since I often went diving, and I can see clearly underwater with my Divine Vision, I often see dolphins. The friendly creatures that makes people, especially tourists, to feel excited when they see them jumping to the surface.

Those who often travelled with ships would often encounter them. Dolphins are friendly and smart animals, but compared to monsters, they are too weak. That's why wherever sailor spot dolphins, they would memorize the dolphins' path, because that path is safe from monsters and predators.

In the previous spot, I see a lot of those friendly dolphins. I would even sometime play with them. And that's also why I often see ships sailing near that area as well.

Dolphins are helpful creature for sailor. That's why whenever fishermen accidentally caught one of them, they would free those dolphins back to the sea.

But in this new spot, there's a group of creatures that looks similar to dolphins. But these dolphins are much bigger than normal dolphins, stronger, faster, and more ferocious. This is a group of killer dolphins.

These dolphins know how to cooperate with each other. They can easily topple boats and ships when they work together. Maybe these killer dolphins are the reason there are too many fishing boats on the bottom of the sea.

No. That's wrong.

From what I see, although they are strong, they can't destroy those boats like the ones I saw at the bottom of the sea. They can topple them and sink them, but not destroying some parts of the boats. Most of the boats I've seen at the bottom of the sea, has holes and few places broken. That means there are other monsters here than these killer dolphins. And that monster should be stronger than these dolphins.

I'll think about that later. for now, I'll fight these dolphins first.

There are about six of them. And they are obvious in their hostility toward me. Seems like they are territorial creatures. They don't want me to trespass into their territory.

All six of them surround me. In front, behind, left, right, up, and down. They are very smart in their strategy. But that will only work on enemies weaker than them. Not me.

But I hate the thought of being surrounded, so I have to get out of here first.

I had Victoria transformed into a spear, and with me fast swimming method, I pierced through the dolphin in front of me. But killer dolphin's reaction is faster than I thought, and it didn't hit its vital. But I got its tail, so that one would have difficulty swimming and continue the fight.

Five more to go.

I looked behind me and see the other five dolphins are chasing after me. And they are really fast! They can catch up with my speed!

Oh, wait! That's wrong. I'm the fast one. Normal human can't swim as fast as I can. I'm the weird one among humans.

The dolphins actually faster than me! And since they are a natural swimmer, they can maneuver better than me. Maybe I should learn swimming from dolphin.

And not just they are faster than me, they are actually trying to corner me to a reef! These dolphins are the smartest creature I've ever fought other than humans.

By the way, humans are both the smartest creature, and also the stupidest one as well. We are such an interesting specimen.

I got cornered, but I don't think I'll lose against them. So, I turn my body toward them, and transform Victoria into a broadsword.

But instead of attacking, the killer dolphins are keeping their distance. Don't tell me that they have a way to attack from distance?

They sure did! The dolphins suddenly screamed at me, and that scream pushed me back to the reef! Although I receive no damage, I can't move because of this attack. What the hell is this!?

I feel the broadsword in my hand is shaking. This mean Victoria has something to tell me.

I transformed Victoria to cover my ear, and put in some air there so she can talk to me. With Victoria's slime body, the air won't leak.

"Dolphins used echolocation to navigate in the sea. So even without light, they can still see in front of them. They used some kind of ultrasound and I think that's how they attacked you." Victoria explained.

Sound? That mean I have no way to protect myself, right? If it's something I heard, then I can just cover my ears. But it's not like that. Maybe that sound these killer dolphins makes, making the water vibrate and that's how they pushed me back.

I don't know if the theory that Victoria said is correct or not, but I can see that the water in front of me is really vibrating toward my direction. Whether it's that echolocation, ultrasound, or whatever it is, it's a way for these dolphins to hunt for prey.

But I'm not giving up. These dolphins wanted to surround me again with the reef behind me instead of another dolphin, but I won't let them do that.

Before the dolphins surround me again, I pushed myself upward and swim as fast as I could. With my Aura covering my whole body. And the dolphins chase after me.

If they wanted to follow me, they are free to do that.

I swim faster and faster to the surface, and jumped high to the sky. Well, not that I could get there by just jumping. It's just a figure of speech.

And the five dolphins also jumped as well. And since they are faster than me, they could jump higher as well.

They must be thinking that with that echolocation, these dolphins can attack me even in air.

They are not wrong, but I won't let them do that.

I transformed Victoria into a grapplehook, and shot the hook toward one of them. Then I pull myself to that dolphin, and slashed its head after I transformed Victoria into a sword.

I do the same thing to the four other dolphins, and that's how I could quickly finish the killer dolphins.

As for the last dolphin who survived after my escape from them, I chased after it after I return to the sea. Thankfully, my Divine Vision can reach to where it went hiding.

These dolphins don't have much attack power, but they are the smartest creature I ever fought. If there are more of smart creatures underwater like these dolphins, I don't think I can win like this.

And so, after killing all the dolphins, I didn't return home yet. But I practice to swim faster. That's the only way I could survive in case I encounter smarter and stronger monsters here.