Two more thumps. A grey flash out the forward port; a sinuous belly caught for a moment in the headlight, a swirl of fin. On Joel's systems board, icons representing the outside cams dip and wiggle.

Superfluous Preteela slides into the copilot's seat. "Regular feeding frenzy out there."

Joel lowers his voice. "In here. Out there. What's the difference?"

She smiles, a safe, silent gesture of agreement. She's got a great smile. Almost makes up for the striped hair. Joel catches sight of something on the back of her left hand; looks like a ref tattoo, but somehow he doubts that it's authentic. Fashion statement, more likely.

"You sure they can spare you?" he asks wryly.

She looks back. The cargo's starting up again: Look at that. Hey, it broke its tooth on us. Christ aren't they ugly—

"They'll manage," Preteela says.

Something looms up on the other side of the viewport: mouth like a sackful of needles, a tendril hanging from the lower jaw with a glowing bulb on the end. The jaw gapes wide enough to dislocate, snaps shut. Its teeth slide harmlessly across the viewport. A flat black eye glares in at them.

"What's that?" Preteela wants to know.

"You're the tour guide."

"Never seen anything like it before."

"Me neither." He sends a trickle of electricity out through the hull. The monster, startled, flashes off into the darkness. Intermittent impacts resonate through Ceratius, drawing renewed gasps from the cargo.

"How long until we're actually at Channer?"

Joel glances at tactical. "We're pretty much there already. Medium-sized hot fissure about fifty meters to the left."

"What's that?" A row of bright dots, evenly spaced, has just moved onto the screen.

"Surveyer's stakes." Another row marches into range behind the first. "For the geothermal program, you know?"

"How about a quick drive-by? I bet those generators are pretty impressive."

"I don't think the generators are in yet. They're just laying the foundations."

"It'd still make a nice addition to the tour."

"We're supposed to steer clear. We'd catch royal shit if anyone's out there."

"Well?" That smile again, more calculated this time. "Is there?"

"Probably not," Joel admits. Construction's been on hold for a couple of weeks, a fact which he finds particularly irritating; he's up for some fairly hefty contracts if the Grid Authority ever gets off its corporate ass and finishes what they started.

Preteela looks at him expectantly. Joel shrugs. "It's pretty unstable in there. Could get bumped around a bit."

"Dangerous?"

"Depends on your definition. Probably not."

"So let's do it." Preteela lays a conspiratorial hand briefly on his shoulder.

Ceratius noses around to a new heading. Joel kills the bait lights and cranks the sonics up for one screeching, farewell burst. The monsters outside — those that haven't already retired gracefully, their tiny fish brains having figured out that metal is inedible — run screaming into the night, lateral lines burning. There's a moment of surprised silence from the cargo. Preteela Someone steps smoothly into the gap. "Folks, we're taking a small detour to check out a new arrival on the rift. If you tap into the sonar feed you'll see that we're approaching a checkerboard of acoustic beacons. The Grid Authority has laid these out in the course of constructing one of the new geothermal stations we've been hearing so much about. As you may know, similar projects are underway at spreading zones all the way from the Galapagos to the Aleutians. When these go online, people will actually be living full-time here on the rift—"

Joel can't believe it. Preteela's big chance to scoop the library and she ends up talking exactly like it does. He quietly aborts a midbrain fantasy he's been nurturing. Try to get into fantasy-Preteela's jumpsuit now and she'd probably start reciting a cheery blow-by-blow.

He switches on the external floods. Mud. More mud. On sonar the grid crawls towards them, a monotonous constellation.

Something catches Ceratius, slews it around. The hull thermistor spikes briefly.

"Thermal, folks." Joel calls back over his shoulder. "Nothing to worry about."

A dim coppery sun resolves to starboard. It's a torch on a pole, basically, a territorial marker beating back the abyss with a sodium bulb and a VLF heartbeat. It's the Grid Authority, pissing on a rock for all and sundry: This is our hellhole.

The line of towers stretches away to port, each crowned by a floodlight. Intersecting it, another line recedes directly ahead like streetlights on a smoggy night. They shine down on a strange unfinished landscape of plastic and metal. Great metal casings lie against the bottom like derailed boxcars. Teardrop ROVs sit dormant on flat plastic puddles frozen harder than basalt. Sharp-edged conduits protrude from those congealed surfaces like hollow bones sawn off below the joint.

Way up on one of the port towers, something dark and fleshy assaults the light.

Joels checks the camera icons: all zoomed, pointing up and left. Preteela, conserving O₂, has retired her patter while the whitecaps gape. Fine. They want more mindless piscine violence, give 'em more mindless piscine violence. Ceratius angles up and to port.

It's an anglerfish. She bashes herself repeatedly against the floodlight, oblivious to Ceratius approach. Her dorsal spine lashes; the lure at its end, a glowing worm-shaped thing, luminesces furiously.

Preteela's back at his shoulder. "It's really doing a number on that light, isn't it?"

She's right. The top of the transponder is shaking under the impact of the big fish's blows, which is odd; these beasts are big, but they aren't very strong. And come to think of it, the tower's shaking back and forth even when the angler isn't touching it…

"Oh, shit." Joel grabs the controls. Ceratius rears up like something living. Transponder glow drops off the bottom of the viewport; total darkness drops in from above, swallowing the view. Startled shouts from the cargo. Joel ignores them.

On all sides, the dull distant sound of something roaring.

Joel hits the throttle. Ceratius climbs. Something slaps from behind; the stern slides to port, pulling the bow back after it. The blackness beyond the viewport boils sudden muddy brown against the cabin lights.

The hull thermister spikes twice, three times. Ambient temperature flips from 4 °C to 280, then back again. At lesser pressures the Ceratius would be dropping through live steam. Here it only spins, skidding for traction against the superheated water.

Finally, it finds some. Ceratius ascends into welcome icewater. A fish skeleton pirouettes past the viewport, all teeth and spines, every vestige of flesh boiled away.

Joel looks back over his shoulder. Preteela's fingers are locked around the back of his seat, their knuckles the same color as the dancing bones outside. The cargo are dead quiet.

"Another thermal?" Preteela says in a shaky voice.

Joel shakes his head. "Seabed cracked open. It's really thin around here." He manages a brief laugh. "Told you things could get a bit unstable."

"Uh huh." She releases her grip on Joel's chair. Fingernail imprints linger in the foam. She leans over, whispers "Bring the cabin lights up a bit, will you? Sort of a nice living-room level—" and then she's headed aft, tending the cargo: "Well, that was exciting. But Joel assures us that little blowups like this happen all the time. Nothing to be worried about, although they can catch you offguard."

Joel raises the cabin lights. The cargo sit quietly, still ostriched into their headsets. Preteela bustles among them, smoothing feathers. "And of course we still have the rest of our tour to look forward to…"