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Journal

81 species catalogued across six chapters — 73 of them swimming in water you can dive today. Every rarity, habitat and field note below is read from the same content rows the game itself ships with; nothing here is invented. Full mechanics — sighting, capture, chapter bonuses — live in The Ledger.

Reef Naturalist

16 species

Twilight Naturalist

18 species
Gloomvein Jelly
Twilight Zone
Twilight

“bell pulses every 4.5 seconds”

Pale Drifter
Twilight Zone
Twilight

“never once turned toward the lamp”

Wickerlight Angler
Twilight Zone
Twilight

“dims from the outside in”

Shivering Cutlass Eel
Twilight Zone
Twilight

“trembles until it decides you're safe”

Understory Lanternfish
Twilight Zone
Twilight

“never rises into the brighter water above”

Cellar Mantle Squid
Twilight Zone
Twilight

“wedges itself into the deepest crevice it can find”

Quarter-Moon Jelly
Twilight Zone
Twilight

“keeps a schedule none of us have cracked”

Farwater Banner Ray
Twilight Zone
Abyssal

“only ever passing through, never staying”

Curtain Goby
Twilight Zone
Twilight

“it nests where the grass grows thick”

Not yet in the water
Glasspane Jelly
Twilight Zone
Twilight

“looks like a flaw in the water until it moves”

Farshelf Angler
Twilight Zone
Twilight

“keeps to the exact line where the last light gives out”

Driftmark Eel
Twilight Zone
Twilight

“matches the driftwood's tumble until it doesn't”

Hushfin
Twilight Zone
Twilight

“locks every fin still the instant a motor's pitch changes”

Paperbell Squid
Twilight Zone
Twilight

“mantle creases like a folded page when it turns”

Shelfclinger Crab
Twilight Zone
Twilight

“never lets go of the ledge with more than one claw at a time”

Middrift Ray
Twilight Zone
Twilight

“holds the same depth to the foot no matter what's below it”

Glassbone Fish
Twilight Zone
Twilight

“only the spine shows until the light finds the rest”

Duskhollow Jelly
Twilight Zone
Twilight

“carries a pocket of darker water inside its own bell”

Notes from the Kelp Forest

8 species

Midnight Naturalist

20 species
Duskmaw Angler
Midnight Zone
Midnight

“lure warm-amber — never blue”

Cinder-Thread Eel
Midnight Zone
Midnight

“stitches the silt in even, patient rows”

Deep Shale Crab
Midnight Zone
Midnight

“half the rock down here might be crab”

Vent-Huddle Isopod
Midnight Zone
Midnight

“always found piled against the warm side”

Chimney Veil Fish
Midnight Zone
Midnight

“fins stained rust by the vent it feeds on”

Black-Current Eel
Midnight Zone
Midnight

“outpaces the lamp in the deepest black”

Floor-Glide Ray
Midnight Zone
Midnight

“flattens until it is only more silt”

Still-Water Squid
Midnight Zone
Midnight

“measures you by your speed, not your distance”

Last-Light Angler
Midnight Zone
Abyssal

“the lure goes dark before you ever see the face”

Crustling Eel
Midnight Zone
Midnight

“it bores into the coral crust and waits out the dark”

Not yet in the water
Trench Lamp Angler
Midnight Zone
Midnight

“the light goes out right before it matters”

Far Wall Eel
Midnight Zone
Midnight

“won't leave the wall — get between and it turns”

Basalt Shell Crab
Midnight Zone
Midnight

“picks its own armor, one shard at a time”

Glasshoal Drifter
Midnight Zone
Midnight

“one fish never turns before the whole shoal does”

Voidmantle Squid
Midnight Zone
Midnight

“was talking to something, in a light no one else was meant to see”

Silt Hover Ray
Midnight Zone
Midnight

“wears its own dust cloud like a coat”

Sinkpit Angler
Midnight Zone
Midnight

“the pit is not empty, the lure is just off the leash”

Shelf-Belly Eel
Midnight Zone
Midnight

“the crack in the ledge was never a crack”

Coldcurrent Anchor Crab
Midnight Zone
Midnight

“current sweeps everything past it, it never lets go”

Edgelight Grouper
Midnight Zone
Midnight

“always exactly as far as the light reaches, never closer”

Notes from the Lower Dark

15 species
Trench Wire Eel
The Lower Dark
Abyssal

“logged as a hazard before anyone called it alive”

Hadal Bell Squid
The Lower Dark
Abyssal

“known only from two sonar passes, years apart”

Pressure-Shelf Isopod
The Lower Dark
Abyssal

“the old notes say not to approach the ledge”

Last-Fathom Ray
The Lower Dark
Abyssal

“every sighting agrees it was heading down”

Unlit Drift Jelly
The Lower Dark
Abyssal

“the only jelly on record that carries no light”

Downslope Angler
The Lower Dark
Midnight

“same lure pattern the drone logged three hundred meters up, still descending”

Silt Skimmer
The Lower Dark
Midnight

“the silt scar it leaves has been seen at both survey depths this month”

Overhang Crab
The Lower Dark
Midnight

“found under the same kind of ledge, one band further down than usual”

Undertow Squid
The Lower Dark
Midnight

“rides the same current line the Midnight Zone charts already have marked”

Loose Thread Eel
The Lower Dark
Midnight

“the same body seen higher up, just further down the wall than logged before”

Glasswake Jelly
The Lower Dark
Abyssal

“the bell folds itself into the wake before the lamp can settle”

Cinderflash Darter
The Lower Dark
Abyssal

“one cold blue flash, then only the silt remembers it”

Sable Kite Ray
The Lower Dark
Abyssal

“turns on one wingtip and vanishes below the beam”

Needletail Eel
The Lower Dark
Abyssal

“it finds a crack in the rock before the drone finishes turning”

Embercrown Crab
The Lower Dark
Abyssal

“the crown dims the instant it knows it has been seen”

The Sealed Grotto

4 species

The water itself

Every species above lives in one of six charted zones. See the zones for depth ranges, water conditions and what else shares that water.