# photic zone

> uppermost layer of water in a lake or ocean that is exposed to sunlight more than 1% of surface illumination

**Wikidata**: [Q579649](https://www.wikidata.org/wiki/Q579649)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Photic_zone)  
**Source**: https://4ort.xyz/entity/photic-zone


## References

1. Freebase Data Dumps. 2013
2. Environment Ontology
3. [OpenAlex](https://docs.openalex.org/download-snapshot/snapshot-data-format)