Here's what was datamined a while ago:
Efficient Water Jet "Makes your jetpack cheap to use underwater"
(I would have preferred to read 'faster' there)
Oxygen Rerouter "Reroutes oxygen from the life support system to the breathable bits if you run out of oxygen underwater"
Emergency Life Support System
Humboldt Drive "A thermally-efficient, inversion-proof reactor engine capable of powering the Nautilon even at extreme depths.Must be kept fueled with regular injections of some fuel"
Alluring Specimen (UI_FISHFIEND_POD_NAME_L)
Armoured Clam (UI_SHOOTCLAM_LABEL)
Abyssal Horror (UI_GRABBYPLANT_NAME_L)
Clam Pearl "A fancy clam pearl"
Fancy bead
Fish Core "A thing from the fish fiend"
Hypnotic Eye (UI_EYEBALL_NAME_L) "A spooky staring eye from a grabby bastard."
Vent Gem (UI_VENTGEM_NAME_L) "A lovely gem from one of them there lava vents."
Submarine Fuel "Fuel cell for a sub"
Cyto-Phosphate (Found from underwater plants, Organic Compond)
UI_SUMMON_SUBMARINE Summon Nautilon Submarine
BLD_GARAGE_SUB_NAME NAUTILON CHAMBER "An advanced, fully-airlocked docking station for the Nautilon submarine."
UI_SUMMON_HOVERSHIP Summon Dragonfly Exocraft
BLD_GARAGE_H_NAME_L Dragonfly Geobay "An underground secure parking facility for the Dragonfly light Exocraft."
UI_ABOVEWATER_WARNING Must Be Constructed Underwater
BLD_WATERPLANT_1_DESCRIPTION CURLY CORAL "A delicate marine invertebrate, cultivated for potted growth. Its distinctive looping structure gives it an attractive whimsical appearance."
BLD_WATERPLANT_2_DESCRIPTION AQUATIC CRYSTAL "An eye-catching cluster of crystallised oceanic minerals. These crystals grow in a shard-like structure, and feature an unusual marbled colouration."
BLD_WATERPLANT_3_DESCRIPTION CANDELABRA BLOOM "A striking plant featuring luminescent, orb-shaped flowers. This domestic variety has adapted to absorb and process oxygen from any source, whether growing on land or underwater."
BLD_BARNACLE_DESCRIPTION "A tenacious arthropod, naturally found encrusting stationary or slow-moving underwater objects. This variety can be encouraged to affix itself to a chosen position, adding an aged marine appearance to bases."
If you're interested in reading about other things like 'cooking' go here: https://nomanssky.gamepedia.com/Datamining