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


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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


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Submerged: A Subnautica Survival Diary – Entry 15: New Horizons, New Problems

Submerged Entry 15: New Horizons, New Problems

Platform: Steam Deck
Game: Subnautica

Video: Lifepod 7 expedition, Cyclops breakthrough, and selecting the new base location (no commentary)

The first thing on today’s agenda was finally listening to the radio message I had completely forgotten about during the last entry. The signal came from Lifepod 7. The message itself was not exactly precise, but it did give me something useful to work with: approximately one kilometre from the stern of the Aurora, around 200 metres deep.

Valentino could reach that depth without too much trouble. The bigger issue was everything beyond it. If I wanted to keep pushing deeper into the ocean, I was going to need to improve the Seamoth’s depth capabilities properly.

Which meant another trip to the Jellyshroom Caves.

Back Into the Caves

By this point I know the route into the caves well enough that it no longer feels completely alien, although I still would not describe the place as welcoming. Giant glowing mushrooms, abandoned Degassi structures, and the general sense that the entire biome wants to swallow you whole does tend to ruin the atmosphere slightly.

While collecting Magnetite, I noticed a PDA I had somehow missed previously. The logs mentioned another Degassi base deeper within the caves, roughly 250 metres down.

Conveniently, that depth was perfect for Valentino.

Naturally, I went looking for it immediately.

The base itself was partially abandoned, partially destroyed, and still somehow more organised than anything Alterra has left me with so far. I moved through the structure scanning and looting whatever I could find. Amongst the debris were fragments for a Nuclear Reactor, which is potentially useful later, but the real discovery was something else entirely:

A Water Filtration Machine.

That is a massive upgrade for long-term survival. The idea of having a permanent source of clean drinking water inside the base changes things considerably.

Unfortunately, the universe immediately balanced this optimism by informing me the machine requires Aerogel to construct. I still have absolutely no idea how to make that.

So for now, the Water Filtration plans have been pushed onto the increasingly large “future problems” list.

The Stalker Tooth Problem

Returning to base, I turned my attention toward upgrading Valentino properly. The MK2 Depth Module required Enameled Glass, which meant gathering Glass and Stalker Teeth.

Quartz was easy enough to collect. Stalker Teeth were another matter entirely.

At first the Scanner Room refused to cooperate, so I switched the scan to Metal Salvage instead, figuring I could track the Stalkers themselves and wait for a tooth to drop naturally while they played with the scrap.

This approach did not work.

I tried patience. I tried following them around. I even tried encouraging the process slightly more aggressively by ramming them with Valentino and stabbing them with a knife.

Still nothing.

At this point I briefly convinced myself I probably needed a Stasis Rifle for the whole process and headed back toward the Scanner Room in defeat.

Then I noticed it.

The Scanner Room could scan directly for Stalker Teeth.

Suddenly the entire situation became significantly easier.

I switched the scan immediately, headed back outside, and found a tooth almost instantly. Apparently the solution to my problems was simply reading the Scanner Room properly instead of behaving like an underwater caveman for twenty minutes.

Valentino Goes Deeper

With the final materials gathered, the MK2 Depth Module was finally completed and installed into Valentino.

Maximum operating depth: 500 metres.

That is a very significant improvement over the previous 300 metre limit. The deeper parts of the planet suddenly feel far more accessible now, which is either excellent news or a terrible idea.

Probably both.

Lifepod 7

With Valentino upgraded, it was finally time to investigate Lifepod 7 properly. I checked the coordinates again and began making my way toward the stern of the Aurora.

The closer I moved toward the wreck, the more careful I became. I wanted to search thoroughly without drifting too far into open water, particularly considering what lives around the Aurora.

Unfortunately, the local Reaper Leviathan decided to introduce itself anyway.

The thing appeared out of nowhere and chased Valentino for a short distance before somehow losing interest. I still do not entirely understand how we escaped that encounter intact, but I was not about to question my good fortune.

And then, almost immediately afterwards, I saw something far more important resting on the seabed.

The final Cyclops engine fragment.

After all this time, the Cyclops blueprint was finally complete.

Which means I now have another vehicle to eventually construct. More importantly, I now have another vehicle that will eventually require a name.

The Lifepod and the Doll

Eventually I found Lifepod 7 itself, carefully matching the surrounding terrain against the photograph I had been given. Valentino had taken a beating during the earlier encounter, so I stopped briefly to repair the damage before entering the pod itself.

Truthfully, there was not much left inside worth salvaging.

There was, however, one unusual discovery.

A strange doll sitting quietly within the wreckage.

I could not pick it up directly, but I was able to scan it. After checking my blueprints later, it appears I can now build my own version of it.

Something about the doll felt strangely familiar though. It reminded me of someone from another underwater disaster involving another submarine.

If memory serves correctly, things did not end particularly well for them either.

New Base Location

Before heading home, I spent some time surveying the surrounding area carefully. The more I explored near the stern of the Aurora, the more obvious something became.

I need a second base.

The original Mushroom Forest base is still serving me well, but operations are slowly moving further and further away from it. The deeper I push into the planet, the more useful a forward outpost becomes.

Eventually I found the spot I was looking for.

Close enough to the Aurora to support further expeditions. Far enough from the deeper drop-offs to remain manageable. Dangerous enough to feel like a terrible idea.

Perfect.

I dropped a beacon into the seabed and gave it a name:

New Base Location.

That is right.

I am building a new base.

Continue the Journey

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