Thomas Marvolo Riddle, also known as Lord Voldemort, was scared. And angry. He'd been pretty-well defeated by that Mudblood Potter, of all people, after all. Voldemort had been hit with an over-powered Binding Hex, a Weight Charm, and a Banisher that sent him to the middle of the Hogwarts Lake, and thence to the bottom. Him, Lord Voldemort, who'd struck such terror into the hearts of Wizardkind that his very name had been feared for years afterward! Deafeated by a boy!

There was, however, something that Voldemort did not know about the lake in which he found himself drowning. The Hogwarts Lake, in eons long past, was part of the Atlantic Ocean. The lake had, over the millennia, become land-locked, but it retained its salinity and was in effect an extension of the Atlantic. Therefore, when his final breath issued out of his lungs in a bubbling torrent, ten fathoms beneath the surface of the lake, the Powers That Be considered him to have died at sea...

Which brought him to his current situation, finally realizing that he was off the edge of the map and into the area marked 'Here Be Monsters'. Tom Riddle knelt on the deck of an old three-masted sailing ship, surrounded by the dagger-toothed maws of a crew of beings half-man and half-sea creature, but unlike any mermen he'd seen or heard of. And before him stood the monster of monsters, tentacle-bearded and dressed in the garb of an 18th-century sea captain, one hand a crustacean claw and one leg a crustacean leg.

And when this beast spoke, Tom Riddle, whose pseudonym of 'Voldemort' meant 'Flight from Death', knew for the very first time that there were more monstrous things than himself in this world, and for the very first time, he truly knew fear.

"Thomas Marvolo Riddle, do ye fear Death?"