Tejas Naladala Blog

CTD lifting off the deck of the R/V Revelle.
The First CTD, Credit: T, Naladala, University of Washington, V26

August 10-11, 2026

Over the next two days, I got kidnapped twice.

The first kidnapping ended with acetone in a freezer. The second ended with me arguing about the direction of the handle on a titanium hydrothermal vent cap.

Never thought I’d say that sentence.

At 4:13 a.m., I was woken up by Jolee because my alarm had not rung. Or so I told myself. There are currently no witnesses willing to support my version of events.

This was going to be my first CTD cast. Until the previous day, I didn’t know what CTD meant. Now, still half-asleep, I was standing on a freezing deck preparing one as though lowering scientific machinery into the Pacific before sunrise was part of my normal morning routine.

A CTD stands for conductivity, temperature, and depth. It is a large instrument package that measures the physical and chemical properties of the water column. Around its metal frame sit 24 Niskin bottles, each of which can be closed at a chosen depth to bring that exact water back to the surface. We prepared the rosette, cocked the bottles (which is a strangely aggressive phrase for arranging heavy water containers) and made sure everything was ready for deployment. At 4:50 a.m., the cast began, collecting water from depths approaching 600 meters.

It was chilly enough that every metal surface felt personally hostile.

I watched the CTD disappear below the waves, carrying open bottles into complete darkness. Somewhere beneath us, those bottles would close one by one and return holding twenty-four small pieces of the ocean.

Once the CTD was back aboard, I started walking toward my shift.

An animal covered plastic pink flamingo near Smokey Taverns, Southern Hydrate Ridge.
A pink flamingo deployed several years ago by MBARI, now home to white gastropods and anemones. Credit: UW/NSF-OOI/WHOI; J2-1980. V26.

I did not make it.

Mariela and Joe intercepted me and redirected me toward chlorophyll sampling. To be fair, they asked very nicely. “Kidnapping” is simply for the narrative.

The water collected by the Niskin bottles had to be processed to determine how much chlorophyll (and therefore how much photosynthetic life) was present at different depths. We measured a known volume of seawater, pulled it through a glass-fiber filter, and concentrated the tiny phytoplankton and their pigments onto a disk barely wider than a coin. The filter would then be placed in acetone and stored cold and dark so that the chlorophyll could later be extracted and measured by fluorescence.

I immediately demonstrated my laboratory precision by dropping the burette.

A few minutes later, I tore the filter, the one object in the experiment whose entire job was to remain intact. If ocean science has a probationary period, I was speedrunning it.

Somehow, with help from Mariela and Joe, the sample survived my participation. The water was filtered, the chlorophyll was captured, the acetone was added, the labels matched, and everything reached the freezer.

While we worked, we talked about how I had ended up here. I told him how computer vision had pulled me into machine learning, how machine learning had pushed me deeper into electrical and computer engineering, and how ECE had somehow deposited me onto an oceanographic research vessel.

Boy, am I all over the place. Or perhaps I am finally finding the place where all of it overlaps.

The next morning was comparatively civilized. I woke up before my alarm. Thank God Jolee did not have to rescue me again. I reached my station and began event logging during Jason Dive J2-1780 at Southern Hydrate Ridge. The team was replacing a digital still camera and surveying a methane seep roughly 780 meters beneath the surface.

Then the seafloor began to bubble. Nearby, we saw exposed methane hydrate, the ice-like material from which some of that gas originates.

Deb explained the biogeochemistry unfolding in front of us. Through the screen, I had initially seen bubbles. Then, in the middle of this alien, methane-powered ecosystem, we encountered…a flamingo? At 780m below sea level?

It was a marker placed during an earlier MBARI expedition and still stood among the microbial mats. Apparently, when humanity reaches another world, our first instinct is to decorate it like suburban Florida.

We also saw eel-like fish moving across the seafloor, translucent jellyfish drifting past Jason’s lights, and crabs occupying the terrain with the confidence of animals that had never paid rent. And why would they? It’s their world, we are just living in it.

The fantail loaded with RCA equipment.
The fantail of the R/V Revelle loaded with RCA equipment. Credit: T, Naladala, University of Washington, V26.

Toward the evening, I was walking to our student meeting when I was kidnapped for the second time. This time, the perpetrator was Mitch.

In reality, Mitch asked whether I wanted to help him with something, and I immediately agreed. I am lying exclusively for dramatic effect. Again.

This is probably why people always called me a drama queen.

Mitch led me to the foredeck, where equipment was secured beneath a tarp. We pulled back the tarp and began unpacking. First, we cut what felt like a million zip ties. By the end, my fingers were absolutely cooked.

This was especially humiliating because I regularly go to the gym and occasionally brag about deadlifting 405 pounds. Yet there I was, asking for help with a zip tie.

Soon, I was sitting on the rough, nonskid deck with a wrench in my hand, tightening what felt like a million bolts. The ocean moved beneath us, the wind moved around us, and I tried very hard not to drop anything expensive into either.

Among the equipment was a titanium hydrothermal vent cap, often called a “hat.” Startup people are always told to wear many hats. Nobody warns you that one of them may be titanium and designed for a hydrothermal vent.

Then Mitch and I began debating which direction its handle should face. The orientation mattered because Jason’s manipulator arm would eventually have to approach, grip, move, and position the cap on the seafloor. A handle that appears perfectly reasonable to a human standing above it may be awkward for a robot viewing it through cameras, working with limited wrist motion, and approaching from a completely different direction.

I attempted to stand my ground. Mitch responded with the deeply unfair advantage of several decades of experience. More accurately, I proposed a design hypothesis based on approximately fifteen minutes of familiarity with the equipment, and Mitch conducted live peer review while clowning me.

The simple handle was not simple anymore.

I began this voyage joking that I was a prisoner aboard the ship. I had the captor wrong. The Revelle has doors.

Curiosity is the thing that keeps kidnapping me.

The Magnificent Jason. Credit: T. Naladala, University of Washington; V26.
The Magnificent Jason. Credit: T. Naladala, University of Washington; V26.

August 9, 2026

By the time we left Newport, I had become a prisoner.

The previous day, we had driven from the University of Washington to Newport, Oregon, and moved onto the R/V Revelle. Somewhere between finding my bunk, learning which staircase went where, getting lost, and discovering that every hallway can somehow return you to the same hallway, I learned that my international-student paperwork meant I would not be allowed to leave the ship for the next ten days.

“Prisoner” is legally inaccurate. But in the moment? It was emotionally efficient, and made significantly less convincing by dinner that tasted like it came straight out of a Michelin-star restaurant.

My first impression of the R/V Revelle was the people.

Everyone on this ship has so much aura it is honestly ridiculous.

The First Sunset. Credit: T. Naladala, University of Washington; V26.
The First Sunset. Credit: T. Naladala, University of Washington; V26.

I am leaving that sentence raw because “exceptionally competent” sounds like a LinkedIn recommendation. The pilots can guide a robot through murky water. The engineers can make electronics, fiber-optic cables, pressure housings, and corrosive saltwater somehow coexist. The scientists can look at a noisy graph and see a story unfolding beneath us. And yet, everyone spoke with the humility and grounded-ness of a monk in deep meditation.

I guess the Dunning-Kruger effect stands its ground.

Walking through the kitchen passage, I noticed a five-dollar bill taped to a whiteboard with an arrow that said, “found on deck.”

Five dollars is not a lot of money (at least in this economy). But the honesty felt more expensive than the Kohinoor. Nobody pocketed it. Nobody ignored it. Nobody turned it into a blockchain. They simply found something that was not theirs and made sure it could return to whoever had lost it.

The ship appears to run on diesel, fiber optics, and an amount of integrity I can only hope to live by.

When the R/V Revelle finally left Newport, everything changed slowly and then all at once. Buildings became coastline. The coastline became a thin strip. Eventually, land was only a figment of my imagination.

Not long afterward, we had an abandon-ship drill. We carried our immersion suits to the muster area, listened to the procedures, and climbed into bright orange survival suits. Nothing says “welcome aboard” quite like immediately rehearsing how to leave.

The R/V Revelle. Credit: NOAA
The R/V Revelle. Credit: NOAA

Then came our first dive.

At the Oregon Shelf site, the seafloor is “only” about 80 meters below the surface, as everyone said on board. This seemed weird for someone who was afraid of the “deep-end” of the swimming pool as a kid, with the maximum depth being 6 ft. Strong currents and suspended sediment made visibility difficult.

Inside the Jason control van, it was organized chaos. Pilots, navigators, engineers, scientists, cameras, sonar, navigation, and the ship itself all have to remain synchronized. Commands were short. Nobody seemed rushed, and yet nothing was slow.

During the dive, I learned the event-logging and video-logging roles.

Event logging turns the operation into a timestamped sequence: where Jason is, what the ship is doing, which instrument is being moved, what the manipulator is touching, and which image belongs to that moment. Video logging monitors the camera feeds, maintains the recordings, and captures still images whenever the ocean does something worth remembering.

It looked simple for approximately five seconds.

In reality, two humans were compressing an entire multimodal world into structured memory. Multiple video feeds, vehicle navigation, sonar, telemetry, operator conversations, instrument states, and scientific context were all arriving continuously. The loggers had to notice the right thing at the right second and describe it clearly enough that someone years later could understand what happened.

My AI/ML brain responded by committing its usual social offense:

How do we make this automated and agentic?

Not an AI that pilots Jason. Not something that decides what matters instead of the scientists. Yet. At least. One that watches every feed, listens to operator speech, aligns events with navigation and telemetry, proposes timestamps, saves evidence, and retrieves relevant historical moments.

So I started asking questions. One person directed me to another person, who knew another person, who knew where the data lived, who knew where the compute might come from. As Joe (the vessel’s software engineer) would say, I basically performed a breadth-first search through the ship’s social graph.

By the end of the day, I had found a path to GPU compute and terabytes of historical expedition data extending back more than a decade.

I had begun the day learning how to log one dive. I ended it staring at enough history to teach a machine how to remember dozens of expeditions. Then came my wildest imagination, something I learn during my time at San Francisco.

Could the hydrophone archive measure more than sound? Because Acoustic travel time changes with the temperature, salinity, and pressure of seawater, could we use passive acoustic thermometry to recover changes in ocean temperature? Could repeating earthquakes become free transmitters, their T-waves captured by hydrophones and converted through seismic ocean thermometry into measurements of deep-ocean change? Could those results be combined with CTD profiles, current measurements, meteorology, navigation, video, and seafloor instruments to reconstruct not just what every sensor recorded, but what the ocean itself was doing?

Could a system notice relationships nobody had thought to place beside each other?

Could it discover that a current shift consistently precedes a collapse in camera visibility? Could it connect an acoustic change to seismic activity, biological behavior, or hydrothermal processes?

I have always been ambitious, occasionally to the inconvenience of everyone around me. But this felt different. What started as an idea for automating logs is beginning to look like a scientific data compiler, an expedition memory, and perhaps a curiosity engine for the ocean. It was a massive undertaking, and I didn’t know if it was a warning or an invitation. I took it as the latter.

I finally tried to sleep at 11:00 p.m, regretting not having slept earlier, just like the past 18 years of my life. I lay on my pillow, wide awake. The waves crashed like a wrecking ball against the hull, almost singing a violent lullaby.  It was frightening, and frighteningly calming. The ocean sounded like it wanted in.

Somehow, this was the first moment I wanted in too.