Rule number one of the internet:

Yes, there IS porn of it.

Little googling and I found a whole list of hentai that lets you see the "insides" during the degradation....

"See through" shots, showing the action inside a character's body.

* Behind Closed Doors episode 3
* Cool Devices
o Ep. 9 "Slave Warrior Maya II" (?)
* Enspelled (both episodes)
* Foxy Nudes
* Guy episode 1 ("Awakening of the Devil")
* Lesbian Ward episode 2
* Sexy Magical Girl
* Stepmother's Sin (internal camera–type shot)
* Twin Angels
* Urotsukidoji IV: Inferno Road

Region 2:

* Ane Haramix
* Hatsuinu The Animation episode 1
* Himekishi Lilia episodes 2 and 3
* Inyouchu episode 1
* Shoyonoid Mako-chan (also "Showyonoid Mako-chan"; internal camera–type shot)
* Taimamin Asagi episodes 1 and 2 (possibly episode 3 as well)
* Tokumu Sousakan Rei & Kazeko episode 1