The wind swept across Selkari Cliff, carrying the cold scent of the ocean far below. Neith stood at the edge of the cliff, looking toward the vast darkness beyond the rocks. Behind them, the Research Station hummed quietly. Its curved walls were built directly into the cliffside, illuminated by soft blue lights. Neith had spent countless hours there studying the deepest regions of Neruval, but tonight they had come looking for something different. A faint glow caught their eye. Growing between two cracks in the stone was a Thalvyr Bloom. Its translucent leaves shimmered gently, casting pale light across the surrounding rocks. Neith crouched beside it. “Beautiful…” Something moved behind the plant. Neith froze. Six long legs stepped slowly from the shadows. A strange creature emerged, its smooth body covered in faint markings. Its large eyes reflected the light of the Thalvyr Bloom. A Veylith. Neith carefully reached for their scanner. The Veylith tilted its head. Then it suddenly snapped its long snout toward Neith. Neith jumped backward. “Easy!” A quiet laugh came from behind them. “Careful. They bite.” Neith spun around. A Selkari stood several steps away, leaning casually against the stone wall of the Research Station. Their pale skin was marked by darker patterns, and one of their head frills carried a noticeable scar. Neith narrowed their eyes. “You could have warned me sooner.” “I did.” “You said it after it tried to bite me.” Kael smiled. “Then technically, I warned you.” Neith stared at them for a moment before letting out a quiet laugh. “I’m Neith.” “I know.” Neith’s expression changed. “You know me?” Kael stepped closer, glancing toward the equipment hanging from Neith’s side. “Anyone mapping the abyss knows your name.” Neith looked toward the distant Abyss Beacon, its powerful light sweeping slowly across the dark waters. “And you are?” “Kael.” He paused before adding, “Kael, Tidescar.” The Veylith suddenly wandered between them, completely uninterested in their conversation. Kael watched it disappear into the darkness. “Looks like it likes you.” Neith looked down at the creature’s tracks. “Or it’s following the bloom.” Kael shrugged. “Either way, you made a friend.” Neith smiled and looked back toward the abyss. “Maybe I could use one.” For a moment, neither spoke. Far below, the Abyss Beacon illuminated the surface of the water. Beyond its reach lay thousands of unexplored grottoes, hidden passages, and ancient places no Selkari had seen in generations. Neith tightened their grip on their mapping device. “I’m going down there.” Kael looked toward the darkness. “Then I suppose you’ll need someone who knows the cliffs.” Neith glanced at him. “Are you volunteering?” Kael smiled. “I already did.”

Nerith checked their gear at the cliff's edge. Kael waited beside them, watching the dark water below. The descent would begin soon. But Nerith's mapping device lay dead in their hands. "The screen won't hold," Nerith said. "The pressure down there will crush it in minutes." They turned the device over. No backup. No way to record what waited below. Kael touched the scar on their head frill. "Then your maps stay in your head." "Memory isn't proof," Nerith said. "If I find old grottoes, old signs of life, no one will believe me. I need something that sees in the dark and survives the deep." Kael looked past Nerith, toward the far water. The powerful light swept slowly across the surface. It came from a drone that hung above the abyss, round and heavy, its many lenses glowing blue. "The beacon," Kael said. Nerith followed their gaze. "That's station property. The researchers won't lend it." "They won't," Kael agreed. "But it already maps the surface every night. It just needs a reason to go deeper." Nerith studied the drone. Its lenses turned as it scanned. Mapping lights ringed its body. It was built for crushing depths and total dark. Everything their broken device could not do. "Can you reach it?" Nerith asked. Kael smiled. "Selkari have flown it before. I know the controls." They worked through the cold hours. Kael keyed commands into a worn panel near the station wall. Nerith linked a cable from the panel to their own device. If the drone recorded below, the data could feed back to them. The first attempt failed. The drone drifted but sent nothing. Nerith's screen stayed black. "The link's one way," Kael said. They touched the scar again. It glowed faint. "It records for the station, not for us." Nerith stared at the dead screen. Then they saw it. "We don't pull the data up. We go down with it." Kael frowned. "Dive beside the drone?" "It survives the pressure. We follow its lights. It records every grotto we pass, and we stay in frame." Nerith's wide eyes caught the blue glow. "The station keeps the footage. The footage proves what we find." Kael was quiet. Then they nodded. "Risky. The drone won't wait for slow swimmers." "Then we keep up," Nerith said. Kael entered the last command. The round drone turned. Its lights flared bright. Slowly it sank from the air toward the black water, lenses sweeping, recording everything in their path. Nerith watched it drop. For the first time, they had eyes that would not forget. "It's leaving," Kael said. They pulled their hood tight. "If we're doing this, we go now." Nerith gripped their useless device and let it fall. They did not need it anymore. The drone's light pulled them down into the dark, and Nerith dove after it.

Chapter 3 — The Light Below The darkness swallowed Neith almost immediately. Above them, Neruval’s surface disappeared beneath the black water. The only light came from the Abyss Beacon, descending ahead of them like a glowing moon sinking into an endless ocean. Neith followed its lights, keeping close enough that the drone’s cameras could see them. Kael swam beside them, moving with practiced confidence. “Stay close,” Kael signaled. Neith nodded. The deeper they went, the colder the water became. Pressure pressed against Neith’s body, but their equipment held. The Beacon continued downward without slowing. Then the cliff wall changed. Neith noticed the first opening. A narrow grotto disappeared into the rock. They stopped and pointed. Kael looked toward the drone. Its lenses rotated toward the opening, recording. Neith smiled. “The first one.” They moved closer. Inside, the walls were covered with strange grooves. Some looked natural. Others were too regular. Neith reached toward one of the markings. Before they could touch it, another light appeared behind them. Neith spun around. A figure emerged from the darkness. She was Selkari, but Neith did not recognize her. She had pale blue skin, bright teal eyes, and silver markings that shimmered faintly in the Beacon’s light. Her expression was calm, but she carried herself like someone accustomed to exploring dangerous places. Kael raised a hand. “Who are you?” The stranger pointed toward herself. “Sera.” She paused, then added, “Sera Veylin.” Neith looked at her equipment. “You followed us?” Sera shook her head. “I was already here.” Kael glanced toward the enormous darkness below. “You came down here alone?” Sera gave a small shrug. “I wanted to know what was down here.” Neith couldn’t help but smile. “So do I.” Sera looked toward the ancient markings. Then her expression changed. She slowly pointed deeper into the grotto. Neith followed her gaze. Something was carved into the far wall. Not a natural formation. Not the markings of an animal. It was a symbol. Neith moved closer. Their heart began to race. “This isn’t geological.” Kael examined it. “Then what is it?” Neith stared at the symbol. “I don’t know.” Sera moved beside them. “But someone made it.” The Abyss Beacon suddenly shifted its lights. For a moment, the entire grotto illuminated. More symbols appeared. Dozens of them. They covered the walls and continued deeper into the passage. Neith stared in disbelief. Their dream had always been to prove that intelligent life had once existed in Neruval’s deepest regions. Now they were staring directly at evidence. Kael looked at Neith. “Still think nobody will believe you?” Neith smiled. “No.” They looked toward the Beacon. “Now I just need to find out who left them.” Sera turned toward the dark passage. “Then we should keep moving.” Neith nodded. Together, the three Selkari followed the Beacon into the unexplored depths. None of them noticed the faint movement watching from beyond the edge of the light.

The Beacon's light held steady on the far wall. Nerith floated close to the carved symbols, reading each line, finding no meaning in any of them. The footage would show the marks. It would not show who made them, or when. Nerith pressed a palm to the cold stone and felt the problem settle in. Proof of carving was not proof of history. Without a way to read the symbols, the dive meant nothing to anyone but them. Sera Veylin drifted beside them. She had come down here alone, before any of them, chasing something large in the deep current. She watched Nerith fail to read the wall. Then she reached into her pack. "These aren't random," Sera said. She pulled out a dark handheld device. Its lens glowed faint blue in her grip. "They repeat. You just can't see the pattern yet." Nerith stared at the device. "What is it?" "A lens. It shows what's under the surface." Sera raised it to the wall. The lens threw a cold light across the stone. Beneath the carved symbols, faint lines appeared. Older marks, worn almost flat, ran under the newer ones. Two layers. Nerith's chest tightened. The symbols had been cut, then cut again, by different hands in different ages. "They built over their own writing," Nerith said. Kael moved closer, scar glowing pale along their frills. "How long between the layers?" Sera shifted the lens along the wall. A row of smaller marks lit up near the floor, spaced in even counts. "That's a tally. Depth, maybe. Or time." Her voice dropped flat. "Whoever lived here measured things. For a long time." Nerith signaled the Beacon. Its lenses rotated and locked on the lit wall. The drone recorded the under-marks, the tally, the two layers caught together in one frame. Now the footage showed more than carving. It showed a sequence. It showed people who stayed, who wrote, who came back and wrote again. "This is the proof," Nerith said. "Not that someone carved once. That they lived here across time." Kael nodded once. "Then you have it." Nerith watched the Beacon finish its pass. The obstacle was gone. The wall was no longer a puzzle they couldn't open. It was a record, and the record was on film. Then Sera lowered the lens. Her face changed. "There's a problem." She pointed the device at the floor, past the tally marks, toward the dark passage ahead. The lens lit a long groove in the rock. It was not carved. It was pressed, deep and wide, as if something enormous had dragged itself through. "The newer layer," Sera said quietly. "They weren't writing history. They were writing a warning." Nerith looked at the groove. It led down, into the current where something large still moved. The proof was recorded. But now Nerith knew the carvers had been afraid, and the thing they feared had left its mark too.

The groove ran from the grotto floor into the black passage ahead. Nerith hovered at its edge. The Beacon drone held its light on the warning marks. Those marks named the thing below. Nerith could not read them. Swimming down that passage blind meant trusting a guess, and a wrong guess meant meeting whatever the carvers had feared. Kael drifted up beside Nerith. Their scar glowed pale along the torn frills. "You want to go down there." It was not a question. "I want to know what the symbols say first," Nerith said. "If they name it, I can plan for it. If they just say run, I run." Sera lowered her lens. She had come down here alone before any of them, chasing the same large thing in the current. She knew the deep better than she admitted to her own people. "The lens shows what's cut," she said. "It doesn't translate. Nobody translates this." Nerith studied the two layers of marks again. Old carvings under new ones. A thought caught. "The tally," Nerith said. "The even counts by the floor. You said measurement. Depth or time." Sera raised the lens again. The row of marks lit up. Nerith counted them, then counted the spacing between the warning symbols and the groove. "They're the same count," Nerith said. "The tally matches the warnings. They weren't measuring years. They were measuring distance. How far down the thing stays." Kael leaned in. "So the number tells you how deep it lives." "If I'm right." Nerith's chest tightened. This was still a guess. But it was a guess built on a pattern, not on nothing. "The tally stops at a set depth. Below that mark, the passage belongs to it. Above it, we're clear." Sera held the lens steady on the groove. "Then we don't swim past the mark." Nerith signaled the Beacon. Its lenses turned and locked on the tally, the warnings, and the groove together. The footage caught the reading in one frame. Whoever came after would see the math the carvers left behind. Nerith moved into the mouth of the passage. The water grew colder. The groove deepened under them. Nerith watched the walls for the tally mark that meant stop. They passed worn carvings, then bare rock, then nothing. The mark appeared. A single deep notch cut across the stone, level with the groove. Below it, the passage dropped into pure dark. Nerith stopped. Kael stopped. Sera stopped. Then the dark below the notch moved. Not current. A slow swell pushed up the passage, cold and heavy, and the water shoved against Nerith's frills. Something exhaled down there, low and rhythmic, the same wrong breathing Nerith had chased into the trench in the first place. The guess was right. The thing was real, and it was awake, and it was exactly where the carvers had marked it.

The wrong breathing swelled up the passage again. Nerith held at the notch and watched the drone's light stab into the dark below. The footage had the carvings. It had the tally and the warnings. But it did not have the thing. Without the creature in frame, the proof was a wall of marks anyone could call old scratches. Nerith needed one image of what the carvers had feared, alive, below the line. "The drone can't go past the mark," Kael said. Their scar glowed sharp along the torn frills. "Neither can we." "The drone can." Nerith kept their eyes on the dark. "It's built for the pressure. We're not. We send it down alone." Sera lowered her lens. She had come into this trench before any of them, chasing the same shape in the current, losing her notes to it twice. She knew what waited better than she would say. "You send it down, it doesn't come back," she said. "That footage is everything you have." "If it comes back empty, I have nothing anyone will believe." Nerith's chest pulled tight. "One pass. It drops, it records, it climbs. We stay above the notch." Kael studied the groove running into the black. "Then it climbs fast." Nerith worked the drone's controls. They had learned its hacked rig in the station, every switch repurposed by hand. They set it to descend ten lengths past the notch and return. The drone's mapping lights swung down and locked on the groove. Then it dropped below the line. Its light shrank to a pale coin in the dark. The cold swell pushed up again, stronger, shoving Nerith's frills flat. Sera gripped the rock. Kael did not move. The coin of light stopped. Something crossed it. Nerith saw a flank slide through the beam. Translucent skin stretched over a long body. Blue organs glowed faint beneath it, a cold line of light moving under the flesh. Wide eyes caught the drone's lenses and held. The creature was vast. The beam could not hold all of it. It turned toward the light, slow and certain, exactly where the carvers had said it would be. "Now," Sera said, flat and quiet. Nerith hit the climb. The drone's legs kicked and it rose. The creature's head followed. Its mouth opened wide enough to take the whole machine. The swell hit Nerith like a wall, cold and heavy, and knocked the three of them back against the passage. The drone shot up through the notch. The creature stopped at the line. It did not cross. Its glowing body hung just below the mark, watching, then sank back into the dark. The carvers had read it right. It kept to its depth. Nerith caught the drone and checked its lenses. The footage was there. The flank, the glowing organs, the wide eye turned to the light. The creature, alive, below the warning line. The proof was whole. "You got it," Kael said. Nerith nodded. Their hands shook on the drone. "We go up." They climbed the passage together, past the bare rock, past the worn carvings, back into the grotto where two ages of marks covered every wall. Sera ran her lens over them one last time. "My people won't come down here," she said. "They'll believe it now. They won't have a choice." "Mine pulled my credentials on a false report," Kael said. Their scar glowed, but they did not touch it. "This footage names who lied." Nerith looked at the walls. Dozens of carved symbols. Hands that had lived here, left, and returned to write over their own old marks. Intelligent life, across ages, in the deepest trench of Neruval. The thing Nerith had chased since the first wrong breath in the dark. It was no longer a guess kept secret. It was recorded. It was real. They surfaced at the Selkari Cliff station as the deep light turned pale. Nerith carried the drone into the observation room and set it on the table before the broad windows. The others crowded in. Nerith played the footage from the start: the two layers of carvings, the matched tally, the warning line, and then the creature rising below it, glowing and alive. The room went silent. Someone said no word was needed. Nerith had set out to map every current and grotto of the deep and prove life had thrived below. The map was finished, the proof was in hand, and the breathing that had pulled Nerith into the trench finally had a shape the whole world could see.