"Boom!"
A brilliant flash of light erupted from beneath the feet of the "giant octopus," followed by a deafening roar. In an instant, a towering wall of water surged upward, completely submerging the creature.
Even Dumbledore was stunned at the sight of waves towering far higher than the entirety of Hogwarts. But as the monstrous deluge—which easily could have washed away and destroyed the castle—receded, the upright "giant octopus" had plunged back beneath the water's surface.
Chapter 212