Luminator

A strange light-emitting object underwater. It illuminates the darkness away.
Overview
Luminator is a plant resource found in the sea biome. It is one of the few plants that does not yield seeds, so it cannot be cultivated by destroying it and replanting it later.
Its main use is as an ingredient for oil production. Processing Luminator into oil is slightly more efficient than making oil from 
- Found naturally in the sea biome
- Does not provide seeds
- Cannot be farmed through destruction and replanting
- Produces oil with slightly better efficiency than Petals-based processing
Official description
A strange light-emitting object underwater. It illuminates the darkness away.