![[personal profile]](https://www.dreamwidth.org/img/silk/identity/user.png){kind=small}
The Great Sperm Race!
Feb. 1st, 2013 05:18 pmhttps://www.youtube.com/watch?v=4SFOpHiS-tA
The process the sperm go through to fertilize an egg, human-sized!
The process the sperm go through to fertilize an egg, human-sized!
Reload page in style: light
