The Sea of Monsters(38)

My heart pounded. I’d seen a stuffed Hydra-head trophy at camp before, but that did nothing to prepare me for the real thing. Each head was diamond-shaped, like a rattlesnake’s, but the mouths were lined with jagged rows of sharklike teeth.

Tyson was trembling. He stepped back and accidentally snapped a twig. Immediately, all seven heads turned toward us and hissed.

“Scatter!” Annabeth yelled. She dove to the right.

I rolled to the left. One of the Hydra heads spat an arc of green liquid that shot past my shoulder and splashed against an elm. The trunk smoked and began to disintegrate. The whole tree toppled straight toward Tyson, who still hadn’t moved, petrified by the monster that was now right in front of him.

“Tyson!” I tackled him with all my might, knocking him aside just as the Hydra lunged and the tree crashed on top of two of its heads.

The Hydra stumbled backward, yanking its heads free then wailing in outrage at the fallen tree. All seven heads shot acid, and the elm melted into a steaming pool of muck.

“Move!” I told Tyson. I ran to one side and uncapped Riptide, hoping to draw the monster’s attention.

It worked.

The sight of celestial bronze is hateful to most monsters. As soon as my glowing blade appeared, the Hydra whipped toward it with all its heads, hissing and baring its teeth.

The good news: Tyson was momentarily out of danger. The bad news: I was about to be melted into a puddle of goo.

One of the heads snapped at me experimentally. Without thinking, I swung my sword.

“No!” Annabeth yelled.

Too late. I sliced the Hydra’s head clean off. It rolled away into the grass, leaving a flailing stump, which immediately stopped bleeding and began to swell like a balloon.

In a matter of seconds the wounded neck split into two necks, each of which grew a full-size head. Now I was looking at an eight-headed Hydra.

“Percy!” Annabeth scolded. “You just opened another Monster Donut shop somewhere!”

I dodged a spray of acid. “I’m about to die and you’re worried about that? How do we kill it?”

“Fire!” Annabeth said. “We have to have fire!”

As soon as she said that, I remembered the story. The Hydra’s heads would only stop multiplying if we burned the stumps before they regrew. That’s what Heracles had done, anyway.

But we had no fire.

I backed up toward river. The Hydra followed.

Annabeth moved in on my left and tried to distract one of the heads, parrying its teeth with her knife, but another head swung sideways like a club and knocked her into the muck.

“No hitting my friends!” Tyson charged in, putting himself between the Hydra and Annabeth.

As Annabeth got to her feet, Tyson started smashing at the monster heads with his fists so fast it reminded me of the whack-a-mole game at the arcade. But even Tyson couldn’t fend off the Hydra forever.

We kept inching backward, dodging acid splashes and deflecting snapping heads without cutting them off, but I knew we were only postponing our deaths. Eventually, we would make a mistake and the thing would kill us.

Then I heard a strange sound—a chug-chug-chug that at first I thought was my heartbeat. It was so powerful it made the riverbank shake.

“What’s that noise?” Annabeth shouted, keeping her eyes on the Hydra.

“Steam engine,” Tyson said.

”What?” I ducked as the Hydra spat acid over my head.

Then from the river behind us, a familiar female voice shouted: “There! Prepare the thirty-two-pounder!”

I didn’t dare look away from the Hydra, but if that was who I thought it was behind us, I figured we now had enemies on two fronts.

A gravelly male voice said, “They’re too close, m’lady!”

“Damn the heroes!” the girl said. “Full steam ahead!”

“Aye, m’lady.”

“Fire at will, Captain!”

Annabeth understood what was happening a split second before I did. She yelled, “Hit the dirt!” and we dove for the ground as an earth-shattering BOOM echoed from the river. There was a flash of light, a column of smoke, and the Hydra exploded right in front of us, showering us with nasty green slime that vaporized as soon as it hit, the way monster guts tend to do.

“Gross!” screamed Annabeth.

“Steamship!” yelled Tyson.

I stood, coughing from the cloud of gunpowder smoke that was rolling across the banks.

Chugging toward us down the river was the strangest ship I’d ever seen. It rode low in the water like a submarine, its deck plated with iron. In the middle was a trapezoid-shaped casemate with slats on each side for cannons. A flag waved from the top—a wild boar and spear on a bloodred field. Lining the deck were zombies in gray uniforms— dead soldiers with shimmering faces that only partially covered their skulls, like the ghouls I’d seen in the Underworld guarding Hades’s palace.

The ship was an ironclad. A Civil War battle cruiser. I could just make out the name along the prow in moss-covered letters: CSS Birmingham.

And standing next to the smoking cannon that had almost killed us, wearing full Greek battle armor, was Clarisse.

“Losers,” she sneered. “But I suppose I have to rescue you. Come aboard.”

Chapter Eleven: Clarisse Blows Up Everything