Jump in the lake.

"Alright", you say recklessly. "I'll do it."

It's risky, swimming in the Black Lake at this time. The water's icy, and the Giant Squid might be lurking, but you want to live life on the edge. You've already fought off a dragon this year. A little dip in cold water won't do you any harm. Following Krum's lead, you strip off your clothes, and stand in the freezing winter, shivering. Then, with a yell, Krum jumps over the side of the boat. You lean over the rail to see Krum land in the lake with a splash. He surfaces, and calls up to you.

"It is beautiful. Come on!"

Steeling yourself, you stand at the rail. Then without thinking further, you jump over the side as well. As you plummet down, you regret jumping, but it's too late now. You hit the water, sending up a spray that covers Krum. The water is so cold that the air is knocked out of your lungs. You surface, gasping.

"This isn't nice", you accuse Krum. "It's so cold!"

Krum laughs, then swims back to the ship. He grabs onto a rope, and pulls himself up. You swim over as well, but your fingers are too numb to climb up. You hang on to the end of the rope as Krum pulls you up. He grabs you as you tumble over the rail.

"You are so cold", he says. "I will take you to my cabin."