Sublevel 7

0 atm

External Pressure
340 m depth

Mission

A Station Built
for the Abyss

Sublevel 7 was designed for a single purpose: to endure where no surface craft can operate. Anchored to the seabed at 3,400 metres, our station operates beyond the photic zone, beyond the thermocline, in a world of perpetual darkness and crushing pressure.

Here, life doesn't obey the rules that govern the sunlit ocean. Our researchers study bioluminescent ecosystems, chemosynthetic food webs, and deep-ocean geological processes that shape the planet's crust.

3,400

Metres Depth

340

Atmospheres

Researchers

Current Research

Specimens of the Deep

🪼

Aurelia Caerulea

0 – 2,000 m

A newly catalogued jellyfish species exhibiting triphasic bioluminescence. Its pulse pattern shifts frequency in response to nearby chemical gradients, suggesting a primitive form of chemocommunication.

🐙

Opisthoteuthis S7

500 – 3,000 m

A cirrate octopod recovered from the station's external survey drones. Displays unprecedented skin texture plasticity, camouflaging against volcanic basalt with sub-second response times.

🦑

Architeuthis Primoris

300 – 3,400 m

Juvenile giant squid, first observed at Station S7 in 2019. Tracking suggests a resident population within 12 km of the station — the first confirmed sedentary behaviour in the species.

🐟

Bathophilus Simplex

1,500 – 4,000 m

A demersal fish species emitting a continuous low-frequency electric field. Function unclear — possibly for prey detection in complete darkness, or intraspecific signalling.

Telemetry

Station Live Feed

S7 — Subsurface Telemetry Console

s7@sublevel:~$ station.depth 3,412 m

s7@sublevel:~$ station.pressure 341.8 atm

s7@sublevel:~$ station.temp 2.3 °C

s7@sublevel:~$ water.O2 4.2 mg/L

s7@sublevel:~$ water.salinity 34.7 PSU

s7@sublevel:~$ rps.status ONLINE

s7@sublevel:~$ probe.currents 0.04 m/s NW

s7@sublevel:~$ biolum.events 7 events / last 60 min

s7@sublevel:~$

3,412

Depth (m)

341.8

Pressure (atm)

2.3

Temp (°C)

4.2

Dissolved O₂

Chronicle

Expedition Log

2026-04-01Deployment of new ROV unit S7-Delta. First descent to 3,600 m successful.

2026-03-18Bioluminescent event cluster detected at grid E-14. Duration: 47 minutes.

2026-03-05Specimen OP-07 (Opisthoteuthis) returned to observation tank after 14-month field study.

2026-02-22Hydrothermal vent activity confirmed at 3°41'N — 42°08'W. Sampling scheduled.

2026-02-10Pressure seal maintenance cycle complete. All 12 hatches nominal.

2026-01-28New team rotation: Dr. Yuna Takahashi, Deep-Sea Ecology, arrived via submersible.

2026-01-14Current meter array recalibrated. Baseline readings re-established.

2025-12-30Architeuthis Primoris footage captured on external camera — estimated mantle length 7.2 m.