"Hum—"

A strange and eerie low sound sounded faintly from the bottom of the sea, so low that it almost made people feel breathless. But if you don't listen carefully and intently, if you don't listen carefully and look for it, it will disappear in the blink of an eye, and you can't help but wonder if you are having auditory hallucinations.

"It seems...... A little bit less like a bubble? ”

Professor McGonagall said this, and subconsciously glanced up in the direction of the other two beside her. But for such a moment, she was stunned suddenly—because the voice was suddenly gone?

After a slight pause, I saw that she hurriedly closed her eyes again, listened carefully for a moment, and only after a few minutes did she recapture the seemingly extremely subtle ...... After hearing it, you can immediately feel its sense of presence and the strange humming sound of its inexplicable power.

This strange and contradictory extreme contrast suddenly made McGonagall even more uneasy.

In fact, Snape, who was better at this, obviously felt more in his heart than she did. He naturally heard this voice, and not only that, but he gradually heard something different from it.

"Professor McGonagall, just leave it to me and Professor Sprout, go ...... Use emergency means to contact McLean! ”

The original plan for the study tour was originally proposed by Maca, and in the whole process of organization and preparation, he also led many things. Therefore, it is a matter of course that he will leave one or two means of emergency contact here.

"Maca...... Well, good. ”

McGonagall hesitated for a moment, then nodded, and then went back to the cabin like Flitwick had just done. And after closing the door, she hadn't forgotten to refill the protective spell Snape had used to block the fog.

But I want to ask why she "hesitated" so much at first...... In fact, in addition to the French side, which is currently in the rear of the front line, Maca's direct contact with the Revolution has been completely interrupted for many days. Now that she was trying to re-establish contact with Maca, she was honestly unsure if she would succeed even if she had activated the backup emergency measures.

Needless to say, it's not just the people on the Rebellion Coalition side who are currently bothered and worried about Maca's problems!

In a few moments, McGonagall made a beeline through the middle hallway, rushed into the room at the end, and then slammed the door behind her.

In this way, nearly ten minutes later, the door of McGonagall's room still did not move, but there seemed to be a new situation on the side of Snape and Sprout on the deck.

"Strange?"

Suddenly, Sprout, who was watching the situation in the sea with Snape, became more and more puzzled, and she heard her mutter:

"There was a constant noise from below, but my hurricane algae didn't move in the slightest...... Severus, is it true that you said you saw a giant creature? ”

"I didn't say for sure it was a 'creature'!" Snape shook his head at this point, and said casually as he listened intently to the voice, "However, that sound must be at a deeper point under the sea...... How much of your seaweed has multiplied? Where? ”

"I can't give the exact number," said Sprout, "but I gave them a powerful booster in the first place, potions stuff, you know better than I do what it can do—the main ingredient of the booster is a hundredfold diluted dragon's blood!" ”

"Dragon's blood? If that's what you say—"

Hearing her say this, Snape couldn't help but subconsciously begin to mentally calculate the effect of the drug and the dilution of seawater. However, the consequence of such a distraction is naturally that it is easy to "lose" that buzzing sound.

Momentarily stunned, he hurriedly put aside the unnecessary calculations in his mind and rediscovered the sound that came from underwater.

After a few minutes of listening, he was able to recapture the once lost sound. But this time, when he heard the sound again, he immediately frowned.

"Wait!" After a moment's pause, Snape hurriedly whispered, "Sprout, don't listen!" The voice...... Hmmm......"

……

The voice suddenly went up!

Obviously, there were no shortage of people who were aware of the buzz and listened to it naturally—including the young wizards who were studying in the lecture cabins.

After an unexpected tilt of the previous ship, Alexander, who had fallen, was now back in his seat. At the same time, many of the students who were not at ease before also quieted down.

Yes, the forward tilt of the Change is undoubtedly extremely rare, and this is the first time that such a large tilt has occurred since everyone boarded the ship - you know, even when it sailed through the Antarctic Gyre before, the Change only shook slightly for a while.

Because of this, when the abnormal change appeared just now, the little wizards couldn't help but secretly say bad in their hearts. Then add to that the fact that Professor McGonagall had been called out by Snape earlier, and everyone couldn't help but shut their mouths and feel nervous.

In this situation where nothing is clear, sitting honestly and waiting is what these students should do—their students have experienced several disasters and small disasters in recent years, and they know how to do it when they encounter accidents.

Not to mention, professors often apply for orders after class, and it's hard to listen to them.

Although...... Kids! There are always a few little ones who still can't settle down...... For example, the lion cubs that slipped out early just now.

"Huh?"

For about half an hour from beginning to end, although Enns, who was sitting in the back row, didn't seem to care much about this matter on the surface, he was also silently concerned in his heart. Especially the strange noise, he also heard it, and he was still paying attention to it.

As for the magic book on the desk...... Actually, he hadn't been watching it for a long time.

And it was at this moment, when the mysterious and inexplicable sound suddenly rose, the tone changed from low to high-pitched, and finally directly turned into a disturbing beep, he, like other people listening, only felt a "buzz" in his head, which made him frown, and subconsciously raised his hands to cover his ears.

But at this moment, everyone was stunned to realize that covering their ears or something didn't work at all!