# Challenger Deep

> deepest known point in the Earth's seabed hydrosphere

**Wikidata**: [Q459173](https://www.wikidata.org/wiki/Q459173)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Challenger_Deep)  
**Source**: https://4ort.xyz/entity/challenger-deep


## References

1. GeoNames
2. [Oceans' deepest depth re-measured. 2011](http://www.bbc.com/news/science-environment-15845550)
3. [So, How Deep Is the Mariana Trench?. 2014](http://ccom.unh.edu/sites/default/files/publications/Gardner-et-al-2014-Challenger-Deep.pdf)