Maybe they react to the lightning on Jupiter? Choi thought.

To test her theory, Choi extinguished her headlamp. The surrounding area plunged into darkness. After a minute, her eyes began to adjust. The bright stars to her right and left seemed more brilliant and more numerous than ever. But the most astonishing sight was the flashes of light within Jupiter's clouds.

She gazed up through the darkness of space and saw more and more flashes of light. They were dimmer than the others, which she assumed was why she couldn't see them with her headlamp on-like looking at the stars in the city. Her bright light overpowered the distant dim light.

But the brighter flashes, the planet sized ones, were so brilliant that Choi felt herself occasionally squint from the light. She then noticed that the light from the brighter flashes of light, the pink, yellow and blue, all reached the surface of Europa. With each flash the ice and Europhid field were briefly and faintly illuminated.

Throughout a series of these flashes, Choi watched the Europhid field. The motion was faint, but she could see that they reacted to the light. If they react to light this dim, Choi thought, the sun's light must be extremely powerful. Choi wondered if this extreme sensitivity to light was part of how the Europhids survived in such an extreme environment.

The lightning stopped flashing as the storm mellowed. The landscape descended into a ceaseless darkness. If Choi couldn't feel the seat of the ATV beneath her and the warmth of her breath within her facemask, she might believe she'd entered limbo. She forced herself to look toward the horizon occasionally, to focus on the small band of stars visible past the outline of Jupiter. They looked brilliant, but the light they cast on the surface of Europa was imperceptible to Choi's eyes.

But what about the Europhids?

A flash of light, which may have been on par with previous displays, though it seemed brighter, shot through the clouds of Jupiter, momentarily revealing a mass of angry swirled clouds. Choi looked away from the harsh light and down at the Europhid field.

What she saw made her shudder.

Choi gripped the sides of the ATV. I must have seen wrong, she thought. It isn't possible.

Moving slowly, Choi reached for her headlamp and switched it on. The blinding glow of light shot stabs of pain through her eyes and she had to shield her face from the majority of the view while she readjusted. She only hoped her eyes adjusted before... No.

She was wrong.

She had to be.

Choi moved her hands slowly away from her face and looked out over the Europhid field. The majority of the field looked the same. The closest area, only ten feet from her perch atop the ATV, held Choi's gaze. She had taken samples, at least thirty of the Europhids, and sealed them in level five containment units. She had carefully and methodically tagged them and placed them inside the ATV's storage trailer.

But the eight foot swath of ice she had cleared was now covered. The Europhid's were back!

Choi slid off the ATV and moved toward the back of the ATV's trailer. She kept a close eye on the field as she moved. Her breath came slowly, and her head began to pound with tension. She shook her hands out as she reached for the trailer's handle. She took hold of the door and unlatched it. Swinging the door open, Choi jumped back, unsure of what she would see.

She felt a measure of relief when she saw that all the containers were still fixed in their places and secure. At least the Europhids weren't smart enough to mount an escape from sealed containers. Still...

Choi turned her attention to the field, which was as innocent looking as ever. She scoured the area with her eyes, making sure she didn't miss anything, any kind of clue to what really happened here. She continually reached the same conclusion. The new Europhids didn't spontaneously grow to replace the ones she had removed.

It was much worse than that.

When darkness had enveloped the area and blinded Choi to her surroundings, the field-the entire field of Europhids-had inched toward her.

An attack never came.

Connelly had expected a violent reaction from the creature. She had no idea why, but the twenty-five foot creature just hung in the water, staring at them through its two charcoal eyes. Connelly wasn't sure who was more curious, this creature or her? It certainly seemed to be watching them.

The beast was the approximate shape of a blue whale, wide and tall at the head and tapering back toward the rear. In place of flippers this creature had undulating "wings" like that of a manta ray, only these ran from the head all the way to the tail. Its black eyes were placed one each side, much like a terrestrial mammal. Its gaping jaw opened vertically, like elevator doors. The creature's gargantuan mouth opened and closed causing its body to expand and shrink-breathing water.

Beyond all of the outstanding features on the behemoth was the single attribute that garnered Connelly and Robert's attention in the first place. Its skin was clear, like a pane of glass and its organs and veins glowed with vibrant colors. A beating blue heart rested at the center of the creature's body, partially obscured by various innards, but it could be seen inside, thumping away.

Connelly thanked God they thought to install cameras on the outside of TES. This was footage she would want to see over and over again.

A deep cry exploded from the creature's mouth, causing a rainbow of colors to ripple across its exterior, from front to back. It was a light show the likes of which Connelly had never seen, not even on the most dazzling of Earth's bioluminescent denizens.

Robert fell to his knees, his hands shaking. "Holy..."

Then the response came.

From behind.

Connelly whipped around. Swimming past, no more than twenty feet away was an entire pod of the creatures. They had snuck up in silence while she and Robert were captivated by the smaller one outside the sphere. Connelly realized the creature they'd had the staring match with was the smallest of the group, perhaps just a baby.

Connelly kneeled next to Robert. They looked like two praying saints, but neither could speak a word. The only sound that escaped their mouths was the occasional gasp as they were simultaneously gripped by awe and fear.

Twenty-odd creatures swept past, gently propelled by their wavering wings. The largest of the group looked to be at least seventy-five feet long. With each roll of flesh, the wings shimmered bright pink. Connelly realized that this is what they had seen from a distance. The colors from the interior of the creatures were beautiful but in sheer brilliance, the light emitted from the outer edge of the wings was staggering.

Connelly's vision blurred from tears, swirling her world into a tie-dyed rainbow. She quickly wiped the tears from her eyes, which beaded on the outside of her PMS and rolled off onto the floor. She didn't want to miss a second.

Another call beckoned, returning Connelly's attention back to the baby. A gentle rocking caused Connelly and Robert to fall forward, but both were able to catch themselves on the console that ringed the interior of the sphere. When they looked back up, the baby's right eye starred at them from only inches away. Only the thick glass of the TES sphere separated them.

Connelly reached out and placed her hand on the glass, wishing to God she could touch the creature, just once. A distant call sounded, followed by three dull clicks. The baby, Robert and Connelly looked toward the source. The pod was moving off. The baby called back and was answered promptly. The message was clear, even to Connelly; time to go.

The baby turned back to the sphere and let out a high pitched whine. Then, with a graceful twitch of its wings, floated back, spun around and chased after the pod. As Connelly's vision tracked the baby's retreat, she realized that her eyes had completely adjusted to the dim environment. She could see the bottom, hundreds of feet below, alive with color. Creatures scurried back and forth. Multi-colored plants and coral-like organisms swayed brilliantly in the deep ocean currents. In the water, schools of bioluminescent fishlike creatures of every size, shape and color, darted about. This was a massively intricate ecosystem on par with Earth's.

"Have you ever seen anything so beautiful?" Robert said.

Connelly knew the answer-no-she hadn't even dreamt of anything so magnificent. But she never spoke the word. Her mind was elsewhere. Despite the splendor surrounding them, she couldn't move past the brilliance of the bioluminescent whale-like creatures-bio-whales, she decided to call them. They displayed intelligence equal to a dolphin's, at least, if not more, and she couldn't accept just letting them swim away.

They might never see them again. They had to be observed for as long as possible.

Connelly stood quickly, her body language resolute. She strode to the sphere's main console and worked the keyboard with electrifying fervor.

Robert snapped his head toward Connelly, recognizing the series of keys she just struck. "What are you doing?"

Connelly smiled wide. "Hold on, Robert. We're going for a swim."

CHAPTER 18 -- PREDATORS.

During their previous excursion on the moon, Willard found it near impossible to tear his eyes away from the view above, but with the majority of the sky blotted out by Jupiter's dark side and the remainder of the view obscured by TES's bright lighting, there wasn't much to look at. Willard turned to the control panel and began a series of simple diagnostics on the TES system. Unfortunately, Robert had designed the system so well that, not only was there nothing worth reporting, but the results had come back within seconds.

Willard decided that with twenty minutes before the next scheduled check-in from Connelly, he had time to take a stroll. The hard metal of the TES panel connected solidly with his booted feet and sent him further into the air than the ice. He reached the ice in six large bounds and jumped out onto it. After spending so much time in the Antarctic, the frozen texture of the moon's surface felt familiar to him. Some of the tension wearing at him faded.

He hated being left behind, especially on a mission that was potentially dangerous. He had pleaded his case to Connelly on several occasions, explaining in detail all the problems that could arise, all of the situations that might require his physical presence. But she was hard set in her ways, as usual. She wanted him topside, even insisted he could do more for them from the surface. Willard cringed. He was becoming a grunt on this mission.

Sure, he still wasn't a scientist, but his skills were the ones that kept curiosity from killing the science cat. What was worse about all the waiting was that he knew something was going on down there, and he was missing it. He could hear the excitement in Connelly's voice last time they spoke. And the confusion about the lights being on. And that sound...

What the hell did they find?

Willard stopped and looked back at TES. All was quiet. The cranes sat still, holding the cables in place directly over the melted hole. The bright lights illuminated the black metallic surface of TES, and made the ice around its border glow like a white hot sun. Through the light, Willard could see the green screen of the control console. It hadn't changed. Everything was normal.

Sighing inside his facemask, Willard looked up expecting to see the black nothingness of Jupiter, but instead found himself looking up at a spectacular light show. All across Jupiter he could flashes of light zipping from horizon to horizon. His brow furrowed as he tried to remember hearing anything about this aspect of Jupiter. During their training back at the GEC headquarters, they had been fed an annoying amount of information about Jupiter, Europa and the other neighboring moons, but he couldn't recall any information or images that showed these lights.

Maybe no one knows about them? Maybe I'm the first person to discover them!

Willard's mind began making mental leaps, plotting how the discovery would alter his future. Of course, they'd name the lights after him, Willard's Display or Ethan's Lights. He laughed. That would never happen.

He remembered the digital image recorder kept with the TES equipment. He decided to run back, grab it, shoot a few minutes of video and then be ready to receive Connelly's check in.

Willard turned back to TES and squinted as his eyes adjusted from the pitch black above to the glaring light. All at once, Willard's muscles tensed like a twisting rope. He stared straight ahead, watching to see if what he thought he saw-the TES cables moving downward-happened again.

All at once, a spew of worse case scenarios filled Willard's imagination. The TES cables were dangling! Cut loose! The weight of the sphere was no longer pulling the cable down, allowing it to sway back and forth freely. Willard leapt forward, moving too damn slow in the low gravity. Too damn slow!

Willard's mind wrestled with the possibilities.

The sphere could have been knocked loose and sunk to the bottom.

It could have sprung a leak and imploded under the pressure.

Something could have eaten them!

As he approached the border of the closest TES panel, the most likely scenario rammed into Willard's consciousness. "Damn it, Connelly."

Willard activated his com. "Connelly, come in."

Thirty seconds past. No response.

Willard reached the control panel and took in the screen, which was now alive with blinking messages. It confirmed his fear that the sphere had detached.

"Connelly, if you are reading me, respond now."

With a tightly clenched jaw, Willard began to pace. He knew Connelly had voluntarily separated the sphere. He wondered if she might try a stunt like this and had warned her not to try it without him present. She swore she wouldn't. Typically, she was honest with him. So what made her detach?

Must be important, he thought. But no matter what it was they had found down there, Connelly was still getting a lecture, if only to make him feel better for all this waiting.

Willard raised the volume on his com and heard a loud hiss. After ten more minutes of waiting, he swore to God he would spare Connelly the lecture if they'd just check in. He walked to the hole TES melted in the ice and looked down. The water was black below, hidden from TES's lights. He was cut off and helpless to help.

Willard tightened his fingers until they hurt. "Dammit, Connelly...What have you gotten yourself into?"

Limbs sprawling, Harris dove to the floor of the control center and slid into a nearby console. After quickly righting himself, he looked back to where Peterson stood, still wielding a rake with dagger-like blades. Harris had been immediately wary of Peterson's unsanctioned visit to the control center, but what tipped him off to the ensuing attack was Peterson's unusual stance. It was clear he was hiding something behind his back. And the tone of his voice somehow sounded threatening. When Peterson reeled back and swung the rake around like a sickle, Harris had already flung himself to the floor.

Peterson yanked at the rake, pulling its imbedded blades from the chair's backboard. Harris realized that if he hadn't moved, he would be bleeding to death from twenty stab wounds. Harris climbed to his feet just as Peterson freed the rake and faced off with the captain.

"Peterson..." Harris's tone was authoritative, irritated. He decided that wasn't the best idea. No need to egg the man on. "Michael, put the rake down. Tell me what's bothering you."

Harris watched as Peterson shuffled forward. He could see that his actions were slightly off, staggered and stiff, but just barely. Then he met Peterson's eyes...his red eyes. Peterson still had pupils, but the whites of his eyes had gone red, as though the vessels within had burst.

The rake came back, readied for the next assault.

"Michael, wait," Harris said. "Don't do this."

"I do only what must be done," Peterson said, his voice sounded different. Scratchy.

"Peterson...what?" This isn't Peterson, Harris thought. He's not himself. Perhaps the sting he received is affecting his mind, causing hallucinations? Harris cursed himself. He shouldn't have let Choi go back to the surface. He needed her here.

"You should not have come," Peterson said.

The rake came around like a picket fence caught in a tornado. Harris ducked just in time, feeling the breeze from the farming tool turned weapon whoosh over his balding head. "Come where? What are you talking about?"

"You," Peterson said with a deathly gaze that stung Harris's eyes, "are not welcome here. You must be-" A gurgling sound rose up from Peterson's throat. "We must be...immunized!" Peterson lunged forward and brought the rake down hard, smashing the view screen above Harris head.

Harris could see that Peterson had gone completely insane. The reasons for his mental state no longer mattered. It was clear that if Harris didn't fight back, he would die. And with this maniac left alone on the ship, who knows what would happen to the others on the surface.

Peterson swung the rake up over his head, preparing to bring it down again. Just as he began his downward motion, Harris bolted forward like a charging ram. The rake flew through the air and clambered to the floor as Harris tackled Peterson around the waist. Both men fell to the floor, a tangled mess of flailing arms and legs.

Having been in his fair share of fights during his early military years, Harris knew that once the advantage was gained, you should never let your enemy regroup. And right now, Peterson was his enemy. He was the entire crew's enemy. Harris unleashed a flurry of blows to Peterson's kidneys that he knew would cause the man to pee blood for the next few weeks, but he needed to end this fight quickly and that usually did the trick. The effect was instantaneous.

Peterson clutched his side and winced. Harris stood and watched as Peterson's legs shook with the pain. The man was beaten.

Moving to the com console, Harris prepared to call the crew back from the surface. He didn't want anyone out of his sight until they understood what was happening to Peterson. He'd only turned his back to Peterson for five seconds.

"Interesting, the way you feel pain." It was Peterson.

Spinning around quickly, Harris almost fell over backward with surprise when he saw Peterson standing on his feet, looking as though nothing had happened. He wore no expression of pain and aside from the fresh wrinkles on his uniform, appeared just as he had when he first entered in the control center. Peterson charged forward, wildly flailing his fists.

Harris sidestepped, placed a hand behind Peterson's skull and extended his foot. Peterson went down hard, striking his forehead on the nearest console. The crack of bone on metal made Harris wince.

Petersons's body lay still on the floor, a pool of crimson liquid gathering around his head. With a slow jagged movement, Peterson moved his lips. "P...Plea..."

Harris starred at Petersons's lips, utterly amazed the man was still attempting to form words. A flash of movement to the side told Harris that Peterson's failed speaking attempt was all just a clever distraction. But the realization came too late. Looking down, Harris saw the rake swing across the floor in a wide arc. The pole clipped him behind both ankles with surprising force that sent him to the floor.

When he looked up, Peterson was already standing above him.

"Vaccination."

He wasn't sure if the man was just speaking gibberish or if he was pleading for some kind of cure to whatever was wreaking havoc with his mind. It didn't matter. As Peterson raised the rake above his head, Harris realized that he would die above Europa, along with the rest of the crew.

Peterson brought the rake down, smashing into Harris's skull. When Peterson stood back, blood gushed over the sides of Harris's face and onto the floor. Peterson stepped over the body and exited the control center.