An unexpected encounter

Shingi focused his hearing and ECHOLOCATION Spell on the pool's movement to understand the source. There didn't seem to be anywhere to hide behind, but he used his CAMOUFLAGE Spell, hoping it would be enough. Unfortunately, INVISIBILITY used too much mana, and he couldn't afford to waste it this time.

With ECHOLOCATION, he didn't get as many details as he would with his eyes, but general distances and distances. But even though his Spell didn't allow him to have the best look at what was getting out of the poll, he concluded pretty fast. 

It wasn't a humanoid creature.

He was getting input of a mass of not a stable shape slowly getting out of the water and putting itself together. This was some slime, and since it could move underwater, it was an advanced one.