Clarke watches without moving. Why can't she just let it go? Why does she always have to prove she's better than everything?

Ballard strikes again; this time she slashes into a great tumorous swelling that has to be the stomach.

She frees the things inside.

They spill out through the wound; two huge giganturids and some misshapen creature Clarke doesn't recognize. One of the giganturids is still alive, and in a foul mood. It locks its teeth around the first thing it encounters.

Ballard. From behind.

"Lenie!" Ballard's knife hand is swinging in staccato arcs. The giganturid begins to come apart. Its jaws remain locked. The convulsing gulper crashes into Ballard and sends her spinning to the bottom.

Finally, Clarke begins to move.

The gulper collides with Ballard again. Clarke moves in low, hugging the bottom, and pulls the other woman clear.

Ballard's knife continues to dip and twist. The giganturid is a mutilated wreck behind the gills, but its grip remains unbroken. Ballard can't twist around far enough to reach the skull. Clarke comes in from behind and takes the creature's head in her hands.

It stares at her, malevolent and unthinking.

"Kill it!" Ballard shouts. "Jesus, what are you waiting for?"

Clarke closes her eyes, and clenches. The skull in her hand splinters like cheap plastic.

There is a silence.

After a while, she opens her eyes. The gulper is gone, fled back into darkness to heal or die. But Ballard's still there, and Ballard is angry.

"What's wrong with you?" she says.

Clarke unclenches her fists. Bits of bone and jellied flesh float about her fingers.

"You're supposed to back me up! Why are you so damned — passive all the time?"

"Sorry." Sometimes it works.

Ballard reaches behind her back. "I'm cold. I think it punctured my diveskin—"

Clarke swims behind her and looks. "A couple of holes. How are you otherwise? Anything feel broken?"

"It broke through the diveskin," Ballard says, as if to herself. "And when that gulper hit me, it could have—" She turns to Clarke and her voice, even distorted, carries a shocked uncertainty. "—I could have been killed. I could have been killed!"

For an instant, it's as though Ballard's 'skin and eyes and self-assurance have all been stripped away. For the first time Clarke can see through to the weakness beneath, growing like a delicate tracery of hairline cracks.

You can screw up too, Ballard. It isn't all fun and games. You know that now.

It hurts, doesn't it?

Somewhere inside, the slightest touch of sympathy. "It's okay," Clarke says. "Jeanette, it's—"

"You idiot!" Ballard hisses. She stares at Clarke like some malign and sightless old woman. "You just floated there! You just let it happen to me!"

Clarke feels her guard snap up again, just in time. This isn't just anger, she realizes. This isn't just the heat of the moment. She doesn't like me. She doesn't like me at all.

And then, dully surprised that she hasn't seen it before: