The activity inside the submarine became even busier, with operators nervously adjusting various instruments.

The so-called external detection certainly didn't mean people from inside the nuclear submarine should go out; otherwise, they would be instantly crushed.

With the order from the Commander, a batch of specially-made small reconnaissance robots and scanners were activated.

They seemed to be given life, cautiously sliding into the depths of the sea from the launch bay of the nuclear submarine.

These robots and scanners were designed with extreme precision; their shells could withstand extreme water pressure, and built-in sensors could capture various tiny signals.

Their propulsion systems were highly advanced, allowing them to maneuver flexibly in the deep sea like spirits of the ocean.

With the deployment of the robots and scanners, the big screens inside the submarine began displaying the external situation.

The crew gathered in front of the screens, observantly watching the images and data returned by the robots.

The robots wandered through the deep sea, and their cameras captured various strange underwater landscapes.

Huge underwater mountains, deep trenches, and those marine creatures flickering with faint light formed stunning images one after another.

Suddenly, a weak sound wave appeared on the monitoring screen again, remarkably similar to the previously captured signal.

The operators immediately locked onto the signal source and directed the robots to approach.

As the robots drew closer, the signal grew stronger and stronger.

But soon they discovered these fluctuations did not come from some unknown giant creature but from a group of peculiar deep-sea fish.

These deep-sea fish seemed to have a special biological luminescence ability.

Their body surfaces were covered with glowing spots, and it was these vibrating spots in the water that produced the previously captured signals.

The team members felt both disappointed and excited about this discovery; though they did not encounter the legendary unknown creatures, these deep-sea fishes themselves were a significant discovery.

After all, at a depth of over ten thousand meters, where few had been, this was almost the first time humans were seriously exploring this depth of the ocean.

Marine scientists were filled with intense interest in such creatures that could survive at such deep ocean levels.

After confirming the discovery, the Commander ordered the operators to leave some robots to continue monitoring these deep-sea fish while collecting as much data as possible.

He then commanded the descent to continue.

As the engines of the nuclear submarine roared once again, the numbers on the depth gauge slowly climbed until the astonishing figure of eighteen thousand meters was fixed on the screen.

At this depth, even the powerful searchlights of the nuclear submarine could barely illuminate far, and the sea ahead was like a black hole swallowing everything, mysterious and profound.

The blue glow of the screens reflected on the operators' faces as they kept their eyes locked on the monitors, trying to catch a sliver of information from the endless darkness.

The atmosphere inside the submarine grew heavier, with every team member feeling the infinite darkness enveloping and oppressing their minds.

"Team member F, feeling dizzy."

"Team member G, having some difficulty breathing, adjusting."

"Team member T-9, I think I'm having hallucinations! Reporting, I think I'm having hallucinations!"

The reports of the team members intertwined in the headphones, and everyone was battling their own fears and discomforts.

The Commander gripped the pen in his hand tightly, with his gaze firm and profound, as if he could see through the darkness into the unknown world.

He knew that what these people were facing was not only the pressure of the deep sea and unknown challenges but also a test of human fear itself.

"Team members, stay calm; we have reached a depth of eighteen thousand meters."

The Commander's voice echoed within the submarine.

"This is a great expedition in human history, and each of you is a witness to this history."

"We are not just witnesses of history; we are its creators! Your names will appear on a future page of our human textbooks!"

Under the encouragement of the Commander, the team members gradually calmed down.

They took deep breaths while adjusting their equipment, preparing to explore in this unknown sea area.

At this moment, the submarine's detection system captured an unusual signal again, stronger than before, seemingly conveying some message to them.

"Operator, mark the location of the signal source; we need to conduct a detailed survey of this area."

The Commander swiftly issued the command.

The operator's fingers flew across the keyboard, and soon, a set of coordinates flickered on the screen.

The submarine adjusted its course, slowly approaching the signal source.

As the submarine moved, the surrounding darkness seemed to thicken, and the light of the searchlights dissipated quickly underwater, unable to penetrate the deep sea's gloom.

The team members observed the surroundings through the submarine's external cameras.

Their hearts raced with each movement of the submarine, and everyone silently prayed, hoping to complete this expedition safely.

Suddenly, the camera captured some unusual images.

In the dark seabed, something was moving slowly, with a fuzzy outline but emitting a faint glow.

"Look there!"

A team member pointed at the images on the screen, with excitement and tension in his voice.

All eyes focused on those mysterious images, knowing they might be facing a significant discovery.

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