Subnautica 2 Acid Raion Creature Details
Coral, kelp, sponges
Coral, kelp, sponges
Local data status
Classification
Flora
Group
Flora
Tags
Flora
Databank notes
8
Regions and location notes
No reliable local region list is recorded yet. This page does not convert rumors or unsupported location claims into fixed locations.
Databank entry
Raion carbonica . A colony of worms living inside a shared membrane, probably a sponge. Uses weak acid to digest prey.
1. Raion An organism defined as a sponge occupied by a colony of cloned predatory worms. This sponge is chambered, akin to Earth's extinct sphinctozoans; the chambers grow around a central pump.
2. Pressurized acid The raion's worms secrete weak acid as a digestive factor and defense mechanism. This acid is held under pressure by a plug in the raion's central pump. To avoid unwanted acid release, cut away the chambers before disturbing the central pump.
3. Volcanic origin? The acid raion may have originally evolved near a cold seep or a volcanic caldera. Acid-friendly biochemistry gave it a useful defense mechanism and feeding strategy to colonize other waters.
4. Medical gel The raion's central pump is partially plugged by a mass of worm residue; this keeps the pressure in the chambers high. This residue contains useful clotting factors and broad-spectrum antibiotics. Recommend collection.
5. Problematic genetics Spectrogenetic analysis indicates the host sponge and the resident worms contain partial copies of each others' genomes. This is a biological impossibility on Earth, and suggests that genetic inheritance functions differently on this world.
Assessment: useful source of weak acid for batteries. Central plug contains medically relevant gel. Cut away chambers before removing central plug.
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Native map markers
Acid Raion creature markers for route awareness, biome scouting, and encounter planning on the native map.
Acid Raion sighting 1
X -357202 / Y -26 / Z 436760
Acid Raion sighting 2
X -356929 / Y -26 / Z 436497
Acid Raion sighting 3
X -348934 / Y -19 / Z 428859
Acid Raion sighting 4
X -348244 / Y -43 / Z 390356
Sources and verification
Creature names, classifications, databank counts and region labels come from local creature records. Exact coordinates or habitat claims are omitted when no reliable local record exists.
SN2 Wiki structured creature dataset
Data checked: May 15, 2026