Submerged: A Subnautica Survival Diary – Log 17 | The Descent Continues

Submerged: A Subnautica Survival Diary – Log 17 | The Descent Continues

Platform: Steam Deck
Mode: Survival – No Commentary

Video Entry

Apparently, the answer has been staring me directly in the face this entire time.

I checked my PDA and noticed something I had completely overlooked before: a clue mentioning a Disease Research Facility located 800 metres down near skeletal remains.

I have already been somewhere with skeletal remains 800 metres below sea level.

So naturally, I’m going back.

I take both my orange and purple tablets with me just in case. At this point I’ve learned that alien doors have a habit of refusing entry unless you happen to be carrying the correct glowing geometry.

One More Stop At The Aurora

Before descending, I decide to stop by the Aurora wreckage one more time. I had a feeling I didn’t properly loot it during my last visit.

Turns out I was right.

I found another hole in the hull leading deeper inside and eventually came across a Cyclops Thermal Module.

Very useful timing considering what I’m preparing for.

The Disease Research Facility

Once I reach the skeletal remains in the Lost River, I head left and finally find the Disease Research Facility.

To make this even worse, I realise I could have discovered this place during my previous visit if I had simply paid more attention. The only reason I found it at all was because I had been hunting for Ruby in the area and didn’t want to properly explore the structure without recording it.

Did I scout for an entrance beforehand?

No.

That would have been sensible.

Eventually I locate a way inside and immediately find somewhere to insert one of my alien tablets. The facility powers up enough for me to access alien data terminals, and suddenly several things become painfully clear all at once.

First: there may actually be a cure for the infection I’m carrying.

Second: the facility containing that cure is approximately 1.4 kilometres below sea level.

That is currently well beyond my capabilities.

For now.

While exploring further I recover Ion Cubes and additional alien data. I also learn something I already suspected: I am the last surviving crew member of the Aurora, and the quarantine enforcement platform is specifically preventing infected lifeforms from leaving the planet.

Good thing I didn’t build the Neptune Rocket yet. That would have been an incredibly brief launch sequence.

I also finally learn the true purpose of the Warpers.

They are effectively hunter-killers designed to eliminate infected targets.

Which means every encounter I’ve had with them suddenly makes a lot more sense.

So now I know what happened to the Aurora crew.

And likely what happened to the Degasi survivors too.

The Time Has Come

But now I finally have direction.

The cure exists.

It is below me.

And if I want to reach it, I need to descend another 600 metres beyond my current limit.

Which means the time has finally come.

I’ve spent the last several entries preparing for this off camera: building infrastructure, gathering materials, expanding the base, stockpiling supplies and trying to make sure I don’t descend into the planet completely unprepared.

I return to my larger base, empty out the lockers containing all the materials I’ve gathered and head for the Mobile Vehicle Bay.

I even wait for sunrise because if I’m about to construct giant survival vehicles, I may as well make it look cinematic.

The Prawn Suit

First up: the Prawn Suit.

It still doesn’t have a proper name or colour scheme yet. That sounds like a problem for future me.

But the important thing is that it exists.

And unlike Valentino, it can already reach 900 metres below sea level without immediately complaining about pressure.

That alone makes it valuable.

The Cyclops Problem

Then came the real objective: the Cyclops.

I press the button and immediately get informed that the water is too shallow.

Excellent start.

I briefly consider dragging everything back to the larger base before remembering my original base should still be located in deeper water.

So naturally I load the Mobile Vehicle Bay onto my back, climb into the Prawn Suit and begin walking across the seabed.

It is slower than travelling in Valentino.

But honestly?

Possibly just as entertaining.

Eventually I reach deeper water and try again.

Attempt number two succeeds.

I officially have a Cyclops.

The onboard AI calmly informs me the vessel is designed for a three-person crew.

Unfortunately for the Cyclops, there is only me.

We will adapt.

Preparing For The Descent

Before ending the expedition, I install a MK1 depth module into the Cyclops to improve its diving range.

Eventually it will need a MK2 or MK3 upgrade if I want to reach the 1.4 kilometre facility.

But for now, the next objective is preparation.

I want both the Cyclops and Prawn Suit outfitted as thoroughly as possible before continuing deeper into the Lost River.

I still have no idea what ultimately waits below the planet.

I only know one thing for certain:

I would rather face it prepared.


Continue The Journey

Previous Log: Submerged Log 16
Next Log: Coming Soon
Series Hub: Subnautica Hub


Related Subnautica Content

Submerged: A Subnautica Survival Diary – Log 16 | The Descent Begins

Submerged: A Subnautica Survival Diary – Log 16 | The Descent Begins

Platform: Steam Deck
Mode: Survival – No Commentary

Video Entry

The new base is finally operational.

Honestly, I’m pleased with how it turned out. I had a rough vision in my head while building it, and somehow the result actually resembles what I imagined instead of a collection of underwater tubes held together by panic and titanium.

That said, construction was not exactly smooth. The base developed leaks almost immediately after expansion started, which explains why the walls are now covered in reinforcements. I would love to add more windows eventually, but considering the ocean already tried to force its way inside once, restraint may be the smarter option.

The important systems are online. I’ve got hydroponics running, a water filtration unit producing clean water, and a Gel Sack farm outside. For anyone playing along, once you finally find a Gel Sack, hit it with a knife a few times before harvesting it. The seeds can then be planted in an exterior growbed, saving you from repeated trips into increasingly worrying cave systems every time Aerogel becomes necessary.

The Call From Lifepod 2

During the time spent working on the base, another radio message arrived. I deliberately left it alone until this entry. If I’ve learned anything on this planet, it’s that distress calls rarely improve the situation.

This one came from Lifepod 2.

The coordinates placed it roughly 500 metres below sea level, which is now comfortably within Valentino’s range. Since the last entry, Valentino has received a MK3 depth module, allowing him to descend to 900 metres. I also installed sonar. During testing, it picked up a Reaper Leviathan nearby, so at least now I can detect incoming nightmares slightly earlier than usual.

I still had Lifepod 13 sitting on my HUD as well, so I decided to clear that first. Naturally, I got distracted by wreckage along the way, because apparently I cannot pass abandoned technology without investigating it.

The wreck did not offer much, and neither did Lifepod 13. I suspect I had already visited it earlier and simply forgot to remove the marker. Efficient? No. Consistent? Sadly, yes.

Below 500 Metres

Lifepod 2 was exactly as expected: empty.

No survivors. Just another quiet reminder that everyone else who tried to survive this planet appears to have failed.

While using sonar near the pod, I noticed something else nearby. An opening.

Dark. Deep. Wide enough to continue downward.

With Valentino upgraded and the sonar active, I convinced myself this was a good idea.

That confidence lasted until I saw what looked like an enormous crab with an exposed brain. I briefly considered turning back, but I had already come this far, and apparently that now counts as decision-making.

The deeper I travelled, the stranger the environment became. An underwater river flowed through the cavern, with glowing green fog drifting through the darkness. I scanned what I could and picked up anything that looked useful, because if this planet insists on becoming stranger, I may as well keep stealing from it.

The Waterfall Rule

Eventually I found a waterfall.

Years of gaming have taught me that waterfalls are legally required to hide something, so naturally I investigated.

The passage beyond could not take Valentino with it. It looked like there was breathable air inside, or at least something close enough that I was not immediately dying. Unfortunately, I was also sure I had seen a Leviathan somewhere nearby, along with Warpers moving through the area.

Leaving Valentino outside did not feel great.

I parked him as close as I could and went in anyway.

The Structure Beneath The Planet

Behind the waterfall, I found a giant alien structure buried deep beneath the surface.

I looked for a way to power it, scan it, or interact with it in some useful way, but nothing responded. It just sat there in the silence, which was not comforting.

I returned to Valentino much faster than I entered.

Thankfully, he was still there.

By this point, I was around 800 metres down, and it looked like the route continued even deeper. Before leaving, I found something else: a massive skeleton.

The scan identified it as the remains of a Sea Dragon.

That felt like the planet politely suggesting I leave.

I dropped a beacon to mark the route. I can go further this way later, but not yet. I need the ability to go deeper, and I need more than Valentino if I am going to survive what comes next.

New Targets Unaccounted For: 1

Back at base, another message was waiting.

New targets unaccounted for: 1.

I am assuming that “1” is me.

Which means something knows I exist.

That changes things.

The deeper I go, the clearer it becomes that Valentino alone is no longer enough. If I am going to keep descending into these caverns, I need a mobile base. Somewhere to store supplies, recharge equipment, carry resources, and support longer expeditions far below the surface.

And if something down there decides it wants me dead, I would also like something capable of meeting the problem head-on.

So the time has come.

I said I needed to go deeper.

Now I do.

Which means it is finally time to build a Cyclops and a Prawn Suit.


Continue The Journey

Previous Log: Submerged Log 15
Next Log: Coming Soon
Series Hub: Subnautica Hub


Related Subnautica Content

Submerged: A Subnautica Survival Diary – Entry 14: Return to the Aurora

Submerged Entry 14: Return to the Aurora

Platform: Steam Deck
Game: Subnautica

Video: Aurora return, Prawn Suit fragments, and Neptune Rocket plans (no commentary)

Before heading back to the Aurora, I once again spent some time off-camera scavenging for supplies. Mostly lithium this time, as I wanted to make proper use of the Modification Station. The result is a larger oxygen tank, upgraded fins, and a noticeable improvement in how long I can actually survive underwater without surfacing like a panicked fish every thirty seconds.

Three full minutes of oxygen changes a surprising amount.

I also crafted several fire extinguishers because, unfortunately, the Aurora is still very much on fire.

There were two reasons for returning. The first was the Prawn Suit fragments hidden somewhere inside the wreck. The second was Alterra’s supposed “backup plan” for getting me off the planet, which apparently waited behind a locked door inside the Captain’s Quarters.

Whether escaping is actually possible while infected and living under the watchful eye of a giant alien cannon is another matter entirely.

Approaching the Wreck

I climbed into Valentino and made my way toward the Aurora once again. The closer I got, the more the entire wreck seemed to dominate the horizon. Even after previous visits, the thing still feels less like a crashed ship and more like a warning.

At one point I seriously considered turning around altogether. A Leviathan was swimming nearby, somewhere beneath the waterline, and although I do not think it actually spotted me, I had no interest in testing that theory in open water.

Valentino survived the trip regardless, and eventually the familiar wreckage came into view.

Cave Crawlers and Corporate Fire Hazards

The first order of business inside the Aurora was dealing with Cave Crawlers, which mostly involved launching them into the distance using the Propulsion Cannon. I do not think that mechanic will ever stop being entertaining. There is something deeply satisfying about watching tiny hostile creatures suddenly achieve low orbit.

Beyond that came the usual combination of burning corridors, blocked pathways, and scattered debris. I moved crates out of the way, emptied fire extinguishers into active flames, and slowly pushed deeper into the wreck.

Along the way I found a code for a nearby door and, naturally, immediately abandoned all restraint and grabbed everything that was not physically attached to the walls.

Returning with upgraded oxygen capacity also made a noticeable difference. For once, I could actually stop to explore rooms properly instead of constantly checking my remaining air supply every few seconds.

I even found another flashlight, which is reassuring considering my current one has probably suffered enough abuse already.

The Prawn Suit Bay

Eventually I found what I had really come for: the Prawn Suits.

The bay itself was still partially on fire, which meant carefully weaving between flames while scanning fragments as quickly as possible. One by one the blueprints started coming together until, after four scans, the final piece clicked into place.

The Prawn Suit was now fully unlocked.

Which means at some point soon I am going to need to build one. More importantly, I am going to need to think of a name for it.

Somewhere during all this, I also noticed I had another radio transmission waiting back at base. Naturally, I completely forgot about it again until the recording had already finished.

Alterra’s Escape Plan

After securing the Prawn Suit fragments, I continued moving room to room through the Aurora, embracing my role as the ocean’s least qualified salvage expert. If something was not nailed down, it went into my inventory. If it was scannable, I scanned it.

Eventually I reached the Captain’s Quarters, although actually getting inside proved more difficult than expected because I somehow managed to forget where the code was stored despite knowing full well I already had it.

Eventually common sense prevailed, the code was entered correctly, and inside waited Alterra’s emergency solution to the entire situation:

Blueprints for a rocket.

I appreciate the optimism. Unfortunately, there are still several problems with this plan.

Firstly, I am infected with something unpleasant.

Secondly, there is still a giant alien cannon on the island that already demonstrated very clearly what happens to anything attempting to leave the planet.

So while the Neptune Rocket plans are useful, I would not exactly call them an immediate solution.

Return to Base

Eventually I fought my way back through the Aurora and returned to Valentino. The trip back to base was quieter, although the closer I got to home, the more obvious another problem became.

The current base is starting to feel small.

Between the Scanner Room, Moonpool, Bioreactor, storage space, and everything else I keep dragging back from expeditions, the operation is beginning to outgrow the original layout.

I am now seriously considering either heavily expanding the current base or establishing a second outpost somewhere further from the Mushroom Forest.

Before any of that though, I need to figure out exactly what components are required to craft the Prawn Suit.

And perhaps more importantly, I should probably listen to that radio message.

Continue the Journey

Previous Log |
Next Log
Submerged Hub

Submerged: A Subnautica Survival Diary – Log 11: Copper, Caves, and Structural Regret

Submerged Log 11: Copper, Caves, and Structural Regret

Platform: Steam Deck

Video: Base upgrades, lifepod dive to 250m, cave panic, and Seamoth improvements (no commentary)


I was going to chase the black box. Then I remembered the giant alien laser. Priorities shifted.

The plan had been simple: head back to the Aurora, find the black box data, and pretend I wasn’t about to get shot out of the sky by an alien cannon.

Reality check: I’m not leaving this planet anytime soon.

If I’m here for the long haul, the base needs to stop feeling like a damp hallway with ambition.

Bulkheads, Flooding, and The Game Laughing Directly at Me

I started by looking at a bulkhead, because in my head that means “less flooding” and “more responsible adult survival.”
In practice, the game basically laughed and told me to enjoy living in a fish tank.

So I pivoted to the upgrades that actually move the needle:
more power and medical supplies.

Solar Power and the Medkit Fabricator: A Short Story About Suffering

Goal one: another solar panel.
Goal two: a medkit fabricator, because I’m tired of treating “hope” as a healing item.

Then I checked what I needed and immediately had a new enemy: creepvine samples.
Not because they were hard to get.
Because I already had them.
And then I ate them.

So off I went to replace the snacks I shouldn’t have treated as snacks.

Radio Interruptions: Lifepod 4 Joins the To-Do List

Mid-upgrade, I got a distress signal from Lifepod 4, with the helpful advice to wear a radiation suit.
Which is fair.
But I’ve already handled that situation.

So Lifepod 4 gets added to the list of places I will absolutely go to…
once I’m done putting out the current fires I set myself.

Copper: The Myth, The Legend, The Personal Insult

Copper remains elusive.
I’m finding diamonds more often than copper, which feels like the planet is doing comedy at my expense.

All of this because I need copper wire for a computer chip.
Which means the moment I want to build something “basic,” the universe decides I need to earn it.

At this point I’m seriously considering a scanner room, purely so I can stop living my life like a metal detector with legs.

Medkit Fabricator Online (Finally)

Once the medkit fabricator was up and running, I moved on to a quality-of-life upgrade I should have made ages ago:
a beacon.

I named it “base”, because:

1) it is a base

2) I would like to find it again

3) I don’t need to overthink this

Valentino Goes Deep: The 250m Lifepod Run

With “base” now marked like a sensible person would do, I took Valentino for a drive to a lifepod sitting around 250m down.

Naturally: no survivors.
The ocean doesn’t do happy endings.

But I did come away with something useful: a blueprint for a Repulsion Cannon.
I still need a Modification Station before I can get too excited, but I’ll take a win when it shows up.

The Beautiful Cave That Immediately Became A Problem

Next up: a cave near another lifepod location.
The cave itself is gorgeous.
It’s also the kind of place where you realise, mid-swim, that you have no idea where the exit is.

And that’s when I moved “make a beacon” from “good idea” to “non-negotiable survival requirement.”

I eventually found my way back out, and I didn’t drown in a glowing underwater postcard, so that counts as success.

Valentino’s New Problem: He Can’t Go Anywhere Without Taking Damage

Back at base, I had a new priority: hull reinforcement for Valentino.
He couldn’t so much as breathe underwater without scraping something and taking damage.

So I did what any reasonable person would do:
I went hunting for diamonds.
For armour.
On a submarine scooter.
Completely normal.

Eventually I got lucky and upgraded Valentino with:

  • Hull Reinforcement
  • Storage Module

Now he’s tougher, roomier, and slightly less likely to come home looking like he lost a fight with a rock.

Next Time (If Copper Stops Playing Hard To Get)

  • Hit Lifepod 4 (radiation warning acknowledged, thanks)
  • Seriously consider a Scanner Room to end the copper scavenger hunt
  • Start working toward the Modification Station so that Repulsion Cannon isn’t just a tease
  • Revisit the Aurora plan… after accepting I’m probably getting shot down anyway
Continue the journey:

Log 10 | Log 11 (You are here) | Log 12

🌊 Submerged: A Subnautica Survival Diary – Log 5.5: Racing the Sunbeam

5.5

“Rescue was coming. Naturally, that meant it was time to start a new project instead.”

Platform: Steam Deck
Difficulty: Survival
Recording: Lost due to file corruption — because the ocean clearly wasn’t done messing with me.

Author’s Note: Unfortunately, my recording for this session corrupted before I noticed. So this entry is reconstructed from memory — a cautionary tale for all survivors who trust autosave more than their capture software.

Message from the Heavens

It begins with the crackle of static — another message from the Sunbeam. They’ve located a landing site. They’re on their way. Forty minutes until pickup.

Forty minutes until salvation.

Naturally, I decide to ignore the pending rescue entirely and go chase the final piece of the Mobile Vehicle Bay instead. Priorities.

The Hunt for Titanium and Sanity

I swim toward the Sunbeam’s coordinates, eyes peeled for fragments. Just as I’m starting to lose hope — there it is. The final piece.

I bolt back toward my lifepod like my oxygen tank depends on it (which, to be fair, it always does). The excitement of progress pushes me faster than any propulsion cannon ever could. I check the crafting requirements — Titanium Ingot, Power Cell, a few odds and ends I already have scattered in lockers. Easy enough.

And since I clearly have time before rescue, I think, “Why not go bigger?” Enter: the Seamoth. The personal submersible of my dreams.

Building the Dream

The Mobile Vehicle Bay is first on the list. Titanium gathered, ingot forged, power cell crafted from the remains of old batteries. When it finally deploys and floats proudly on the surface, it feels like progress — real progress.

I climb aboard, ready to build my Seamoth, and immediately realise I’ve made a rookie mistake. No Titanium Ingot. Again. The ocean mocks me with its silence as I swim off once more, scavenging every bit of wreckage I can find.

Eventually, success. The Seamoth blueprint completes, and the little sub rises from the water like a gift from the deep. She’s beautiful — and mine. I climb in, listen to the AI purr, and feel an unfamiliar thing: hope.

There’s still time before the Sunbeam arrives. I point my Seamoth toward the landing site. Maybe, just maybe, I’ll make it in time to see the sky light up with something other than plasma fire.

Next: The Sky Burns

I set course for the island, my Seamoth slicing through the water like it was always meant to be there. The radio says twenty minutes until the Sunbeam arrives. The ocean says otherwise.

Continue the Journey:
Log 5: Waiting for the Sunbeam | Log 6

🌊 Submerged: A Subnautica Survival Diary – Log 5: Scanners, Stalkers, and the Elusive Bay

“Sometimes survival means chasing blueprints you’ll never find and pretending the ocean isn’t full of things that want to hypnotise you.”

Platform: Steam Deck
Objective: Wait for the Sunbeam transmission and maybe, just maybe, build something that floats.

Exploration (a.k.a. Avoiding Impatience)

With nothing to do but wait for the Sunbeam’s next message, I decide to make the most of my surface time. I remember having another lifepod distress signal stored, so I tag it on my HUD and head out exploring. At first, the ocean feels empty — just me, the waves, and a slowly draining battery supply — but that doesn’t last long.

After a bit of aimless swimming, I finally stumble upon the final fragment for the Laser Cutter. I can practically hear the sound of sealed Aurora doors opening already. Victory, thy name is “I can finally cut stuff.”

In the midst of my excitement, I make the questionable decision to scan a Stalker. It could’ve gone wrong in a hurry, but apparently it was too busy minding its own business to care. A rare win for curiosity over self-preservation.

The Hunt for the Mobile Vehicle Bay

With the Laser Cutter blueprints ready, I set my sights on something even more crucial: the Mobile Vehicle Bay. I want my Seamoth — freedom in miniature submarine form. I head toward Lifepod 17 again, the same one that’s been testing my patience since last time.

Luck strikes early — I find two out of three pieces for the Bay in fairly quick succession. Naturally, that’s where the good fortune ends. The third? Nowhere to be seen. I comb the seabed, check every wreck, and even chase shadows thinking they might be fragments. Spoiler: they weren’t.

In true Subnautica fashion, my HUD decides to stop showing the lifepod marker mid-journey. A quick reset fixes it, but it doesn’t help my sense of direction — or my growing frustration. Ten to fifteen minutes later, I’m still empty-handed.

Strange Fish and Stranger Plants

To add to the ambience, I discover a few plants with anger issues and meet a Mesmer — a deceptively pretty fish that freezes you mid-swim while whispering sweet nonsense. The first time it happened, I couldn’t move, couldn’t think, and then suddenly — WHAM. Out of the trance, face-to-face with a glowing fish that definitely wanted me gone.

Thankfully, the Propulsion Cannon was in my hands. A single blast later, and the Mesmer was forcibly introduced to the local wall. Justice served.

Calling It a Night (Reluctantly)

As darkness falls, I decide to call it a day. Nighttime on this planet is truly pitch black, and I’m not wasting my last batteries trying to play deep-sea Marco Polo with blueprints. Still, it wasn’t a wasted trip — I unlocked a few new crafting recipes and gathered plenty of scan data for the databank. Just not the one blueprint I actually wanted.

Tomorrow, the ocean and I will have words. Preferably near the wrecks that have Mobile Vehicle Bay fragments.

Video Log

Continue the Journey

⟵ Log 4: The Cannon and the Leviathan |
Log 5.5: The Sunbeam’s Shadow ⟶

🌊 Announcement: Subnautica Will Be the Next Series!

While my Argonian my have fallen, it’s time to look ahead—and downward. Specifically, into the ocean.

I’m excited to announce that Subnautica will be the next full series featured on Survivor Incognito! The series will officially begin in a few weeks, once I’ve reacquainted myself with the controls (because I apparently forgot how to swim, build, and breathe). It’ll fall under the same permadeath-flavoured survival approach as the others, with a few sea-salty twists.

In the meantime, I’ve already launched the Subnautica Maps Page to help new players, returning survivors, and confused PDA AIs alike. Bookmark it, share it, or yell at it when you get lost near the Aurora again.


🎉 Celebrating 1,000 Views!

Also, a massive thank you to everyone who’s visited the blog—Survivor Incognito has officially passed the 1,000 views milestone!

To mark the occasion, I’m doing something a little different… something a little more classic horror. While I’m still getting my bearings with the controls again, you can expect a familiar mansion, limited saves, and enough tension to make a zombie blush. 🧟‍♂️

More on that very soon.


More updates coming soon, including the official Subnautica start date and a look at what else is on the blog horizon.

Stay afloat,
Survivor Incognito

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