In fact, choosing to go to the dark black lake on a January night for an ugly mermaid encounter is not a good choice for girls.

If he had a choice, Van Lin would have been happy to let Harry do it himself, and then snuggle up by the fire and read a book for a while, then Hermione for a while.

The way Hermione blushed, Van Lin still liked it.

However, it was destined to be just an idea, and contact with the merfolk was necessary, whether it was for Harry or the Kraken's magic.

Under the effect of the bubble head spell, Fan Lin's breathing was not hindered in any way, but the pressure on his chest was a little great under the pressure of the lake water.

In fact, the underwater world is almost unchanging in darkness and tranquility......

At least in Van Lin's ears, he didn't hear anything else, which was a very rare thing, on land, even in the quiet of the night, there was always an even breathing and a humming sound coming from nowhere.

However, in the underwater world, there is silence in the darkness as far as the eye can see.

For the Black Lagoon in January, the swimming fish seem to be a little lacking in vitality.

After swimming less than 100 meters, he didn't know how many schools of fish he encountered.

The swimming fish here seemed to lack vigilance against humans, and Van Lin swam straight ahead, and when he was about to touch the school of fish, the school of fish was embarrassed to separate.

They spread at once, and then quickly converge, maintaining the posture of a race forever.

This should be a favorite place for fishermen, and of course, if you don't take into account the little water monsters and the giant squid in the lake, the Black Lagoon can really sustain an entire town.

This is the first time Van Lin has been in the underwater world, and it is natural to feel that everything around him is a new experience.

However, this freshness did not last long, it is not a good season yet, and the Black Lagoon does lack vitality.

Van Lin carefully bypassed the habitat of the giant squid.

Although he did not exclude the Hogwarts students from playing with him while he was basking in the sun, considering that his underwater presence was an intruder for the giant squid, it was better for Van Lin to stay away from it.

However, while passing through the seagrass jungle, I encountered some trouble.

Little Water Monster, Grindy Lowe.

Grindillo has a green body with green teeth and horns on his head. Grindillo had very long fingers that, despite their strength when grasping things, were easily broken.

In layman's terms, a disgusting, spiky green monster with its face pressed against the glass, making all sorts of weird appearances while stretching out its long, thin fingers.

These guys aren't that friendly.

Van Lin first came into contact with them during Professor Lupin's Defence Against the Dark Arts class.

It's just that these things don't make people feel pleasant, some terrible dark magic creatures.

This aggressive creature attacks both Muggles and wizards. But merfolk have tamed them and kept them as pets.

It's a perfect match for the fish-people, ugly enough and aquatic.

However, these creatures are not very aggressive, and they are classified as XX-level magical creatures by the Ministry of Magic, but any wizard who has some spells like me can easily deal with these guys in one-on-one.

Naturally, these things are well resisted.

Although Grindillo's fingers were slender and powerful, they were crunchy and brittle. The trick to getting rid of Grindy Low is to make it impossible for them to just catch themselves. Casting a Withdrawal Charm on Grindillo will also have some effect, but the spell will turn into a hot column of water underwater.

Naturally, Van Lin's head came up with these bookish methods, but when facing a whole seagrass jungle of Grindillowe, a simple withdrawal spell was not so effective.

Van Lin couldn't help but have a headache when he looked at those crazy little things.

These creatures who could only be reduced to mermaid pets were one of Harry's obstacles, because where Grindy Lowe was, there was the merfolk tribe not far away.

Van Lin was wondering if he could get rid of all these annoying little creatures in one go, so that the second task would definitely become the easiest task ever.

But...... Does this seem to lose the purpose of the game?

Fan Lin pushed his hand, and under the effect of magic, it was as if a solid wall had been formed in the water.

"Get out of here!"

Van Lin's voice came from behind the Bubble Head Charm, it was the language of the merfolk, and these little things that looked troublesome underwater should naturally recognize their master's voice.

In fact, the mermaid has a natural suppressive power for Grindillo.

Van Lin's spell only served as a block, but as the sound was intentionally transmitted to most of Grindillo's minds along the ripples of the water, the little ones let out some muffled strange screams.

This is probably the talent of aquatic life.

If Van Lin wants to spread the sound, he has to pay a certain amount of magic.

Architecture is really a big science, maybe you can study the structure of the mermaid, and then make an alchemical mermaid puppet?

That's a good idea, and the Black Lagoon at Hogwarts is also home to a lot of precious magical materials. At the very least, he found something similar to a gill grass in his swimming.

It's pretty bad.

Tefrey wounded himself badly for the gill grass, and then, here, a casual swim in Van Lynn found a ......

Van Lin shook his head, and he continued to swim forward, and behind the Grindillo habitat was probably the merfolk tribe.

It's easy to plan out the route, get into the water, and swim all the way down to the depths to find the seagrass from the forest, so it's not far from your destination.

After about another five minutes, the scene here is a little strange, the black lake is not a black lake, the mud and sand here are mixed with some black stones, with the fluctuation of the current, a layer of fine yarn is raised, and then ......

Then he slapped Fan Lin in the face.

It's really an unfriendly experience...... If it weren't for the bubble head spell, would I still have to eat a mouthful?

That's a terrible way to welcome.

Fan Lin stretched out his hand and pushed away the black aquatic plants in front of him, which was the second half of the seagrass jungle, and behind the aquatic plants, a patchwork stone house was displayed in front of Fan Lin.

This is his destination, the mermaid tribe hidden in Hogwarts, like the centaur tribe in the Forbidden Forest, Hogwarts always has enough to surprise.