Life in the Deep
The six plants and four creatures of the NauTec oceans.
Plants
Collect all six with Shears; any other tool breaks them for nothing. Every one of them can be grafted for bacteria with the 
Grafting Tool; Bacteria Grafting lists which.
| Plant | Biome | Light |
|---|---|---|
 Deep Kelp |
Bioluminescent Grove | none |
 Luminescent Algae |
Bioluminescent Grove | 9 |
 Glow Polyp |
Bioluminescent Grove | 7 |
 Prismarine Frond |
Prismarine Reef | none |
 Vent Tubeworm |
Hydrothermal Vents | 3 |
 Abyssal Coral |
Abyssal Trench | none |
Deep Kelp grows upward in water like kelp, up to 40 blocks tall (kelpHeight in config/nautec-common.toml). Only the top block of a strand drops, so shear the tip. Glow Polyp clings to any face of a block the way glow lichen does, and Bone Meal spreads it. The other four are single underwater plants.
Lucky fishing zones in each biome also turn up that biome's plants. See Fishing.
Silt Skipper
A small passive fish that swims in schools of up to eight, in the Abyssal Trench, the Bioluminescent Grove and the Prismarine Reef.
- Kill it for a
Silt Skipper item, which you can eat. - Right-click one with a Water Bucket to scoop it into a
Bucket of Silt Skipper, and empty the bucket to release it again.
Lantern Jelly
A slow, glowing jellyfish that drifts through the Bioluminescent Grove. It is passive and has little health.
Drops 1 to 2 Luminous Membrane (more with Looting), used for the Photophore Skin augment.
Vent Crawler
An armoured creature that walks the Hydrothermal Vents floor. It flees when hurt instead of fighting back, shrugs off half of any knockback, and takes no fire damage.
Drops 1 to 3 
Chitin Plate (more with Looting). Four plates make the Vent Carapace augment.
Abyssal Maw
A hostile predator of the Abyssal Trench. It only spawns in dark water below y 40, attacks players on sight from up to 24 blocks away, and chases you through the water. It has 24 health and bites for 6.
Drops one 
Abyssal Organ (more with Looting), used for the Abyssal Eyes augment.
Augments
The three creature drops each make an augment: see Deep Fauna Augments. Spawn eggs for all four creatures are in the creative menu.