The two had wandered underwater for a long time, but without years of experience diving, it was hard to keep their bearings in such a dark, oppressive place.
So they still had not found the merpeople's village, nor had they heard the merpeople singing underwater.
Just then, Draco, who was leading the way, suddenly stopped. He grabbed Harry as he swam up and ducked behind a rock embedded in the silt.
Before the task, the two had agreed on a fairly crude set of hand signals for communicating underwater.
When Harry saw Draco's signal, he knew something was happening ahead.
He peeked around the rock and saw a figure with a white shark's head biting and wrestling with a swarm of grindylows in the weeds ahead.
Clouds of blood and black mud kept billowing up as the vicious struggle continued.
Pheobe, the Beauxbatons Champion, was nearby too, but she had already lost consciousness, and a mass of weeds was slowly wrapping around her slender body.
Harry pulled his head back and began communicating with Draco through looks and gestures.
"Is that Krum? He attacked Pheobe."
"So what if he did? Isn't that a good thing? We might lose two opponents in one go."
"Pheobe can't fight anymore. She'll drown. Shouldn't we at least send up a distress signal for her?"
"Well... going out there will alert Krum. That guy gave us a nasty glare before he went into the water. He's bound to come looking for trouble."
"Then what should we do?"
Fortunately, they never actually had to make some agonizing trolley-problem choice. After suffering injuries while biting the swarm of grindylows to death, Krum left with his eyes glowing scarlet.
And before Harry and Draco could send up a distress signal for Pheobe, a Water Python darted down from