Creature Database

Colonial acid-producing worms inside a sponge — harvest carefully, the pump holds pressurized acid.

A glowing cone-shaped sponge that generates its own light to lure microorganisms.

A land-adapted sponge that pumps air instead of water — its caves hold breathable but explosive gas pockets.

An unassuming button sponge — its dominance historically signals mass extinction.

Ancient armored fish with hard mineralized plating — analogous to Earth's extinct placoderms.

A colony of shell-forming algae-like organisms — rich interior food reserves earn it the nickname 'sea tuber'.

A hydrothermal vent worm with per-segment hearts that buds off clones — but its pores are clogging with waxy deposits.

Behemoth Finger-Legged Jelly (BFJ) — a massive specimen with complex organs and upward-focused eyes, awaiting an unknown future state.

Passive creature — scan to unlock databank entry.

A coral-sponge hybrid where the sponge stopped working and now just collects rent from its coral polyp tenants.

A starfish-like bottom-dweller that feeds via symbiosis — its biopolymer arms form the cabbage-leaf texture.

A soft coral that grows around a symbiotic partner and uses it as a lure for prey.

A tunicate that converts alcohols to sugars — edible, but contains mercury that accumulates dangerously in humans.

Passive creature — scan to unlock databank entry.

The defining structure of the shallow biome — a colony of polyps that absorbs CO₂ and expels quartz nodes.

A chimeric mass of coral and crab tissue — a biological impossibility that feeds like coral but cannot move its limbs.

A basket-shaped starfish with bioplastic fibers strong enough to require tools to cut — an exchange site for symbiotic partners.

A long, low-lying predatory soft coral fan — an obligate predator with a PVC-like skeleton.

A colonial suspension feeder that reproduces rapidly during algal blooms — a possible environmental stress indicator.

The remains of a large crustacean and a bleached coral dome — the crab may have used the dome as a portable shelter.

Enormous arthropod leviathan that uses fatty deposits to feed and protect its eggs.

A raion that has expelled or lost its symbiotic worm population — may not survive long without them.

A sponge colony where predatory worms protrude from the osculum to sting passing prey — minor sting hazard.

Passive creature — scan to unlock databank entry.

A bioluminescent protist-like organism that mimics Cherenkov radiation from a nuclear reactor.

Passive creature — scan to unlock databank entry.

Passive creature — scan to unlock databank entry.

A sponge and worms that have become genetically entwined — each can give birth to the other.

A bioluminescent sea slug that fires a blinding coherent light flash in defense — its flashes may be viral data transmissions.

Small and fluttery — a harmless presence in the Coral Gardens.

A hydrothermal vent worm that pumps cold deep brine to cool hot vent zones — creates cold-water pockets for other life.

An explosive growth of mimics fueled by dissolved nutrients — possibly a sign of a major die-off nearby.

A biological tollbooth built by invisible krill — an impeller ring that draws in water and filters prey.

Enormous camouflaged clam that snaps shut and secretes neurotoxin — a critical lithium source.

Passive creature — scan to unlock databank entry.

A tunicate colony where lesser members achieve success through a mysterious RNA virus — a reproductive enigma.

Squid species that dazzles prey to assist Marrowbreach ambushes.

Small fish that ditched its fins for a living magnetohydrodynamic thruster — and can effectively see electromagnetic fields.

A hydrogen-filled flying predator that drifts above the sea surface — its gas bag ignites from any spark.

The simplest animal type in the ocean — pumps water through pores; its presence suggests a roughly Earth-like biosphere.

Simple colonial animals — polyp and medusa forms, mixotrophic feeders with a nerve net.

The polyp stage of a jellyfish lifecycle — accelerated into early larval release by heat stress, an environmental warning sign.

A vent-dwelling jelly donut that communicates with light and mysteriously sacrifices its calories to the deep seafloor.

Social crustacean with leg-mounted thrusters and parenting instincts.

Passive creature — scan to unlock databank entry.

Filter-feeding soft coral that detects vibrations through miles of water — and listens for something unknown.

A fermentation tunicate that stops breathing as an adult — a source of isoprene for rubber and lubricant.

A sponge with a feeding disc of tentacled cells that shelters larvae of sponge-eating organisms — inedible despite its name.

Kelp-disguised predator that electrocutes prey — and its existence proves kelp must grow somewhere on this world.

Clonal jelly stalk that feeds on dead matter and produces strong acid — a bloom signals ecosystem stress.

Predatory soft coral that triggers a brightness arms race — each noon gorgon competing to shine like the sun to attract the most prey.

A radioactive tunicate that splits seawater into breathable oxygen — but repeated use risks radon buildup and cancer.

Colorful colonial worm organism unique to Proteus.

A coral-sponge hybrid where both organisms carry each other's full genome — living together on coral dome surfaces.

Passive creature — scan to unlock databank entry.

An enigmatic waxy body of sulfuric acid with no cells or genetic material — possibly geology, possibly a shadow biosphere.

Passive creature — scan to unlock databank entry.

A parasite that burrows into living flesh to drain blood — causes fatal dehydration if not removed.

A hard coral on hydrothermal vents that uses temperature gradients to drive its metabolic reactions.

Passive creature — scan to unlock databank entry.

A chitinous mystery that drills into rock to access hydrothermal vents below — distantly related to the False Fission Drum.

A sponge-coral moiety where the sponge has lost its ability to feed independently — genetically identical to the Pebbled Sporal.

A massive colonial organism resembling a spinal cord in a crab shell — mostly dead, infected with giant RNA viruses.

A semi-predatory sponge that expels a cloud of antibiotic toxin on contact — causes burns, nerve damage, and kills nearby organisms.

A worm-and-slime-mold hybrid with a Voronoi-patterned base — its function remains a biological enigma.

Electropredator driven toward the surface by ecological disruption.

A structure more than 2km tall and 3km wide — possibly the largest organism ever documented; possibly dying.

A colonial soft coral whose soldier polyps snap off toxic spines on contact — effects comparable to Earth's gympie-gympie plant.

A kelp-like fermenter whose bulbs produce alcohol — its presence may signal a past or future mass extinction.