# egg case

> natural collagen casing found encompassing some aquatic lifeforms' fertilized eggs

**Wikidata**: [Q1131200](https://www.wikidata.org/wiki/Q1131200)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Egg_case_(Chondrichthyes))  
**Source**: https://4ort.xyz/entity/egg-case


## References

1. Freebase Data Dumps. 2013