Half-Life is a more realistic approach to the bio-technology fusion stuff. I like yours because it seems to be more about making an interesting looking creature rather than being all correct and stuff.
The best I can figure, is it would be a strap down device. The person goes under it, the claws used to hold the arms and feet, the head of the turtle, used to strap the head, mayhaps the tail could hold something like a plug?
Interesting device, but, I'm not sure how practical it is.
I see the Cyber Turtle part, but I'm still lost on the Sadomasochist thing. Anyways, once again you've managed to create some beautiful art! I hope you make a decent living off of this stuff. Btw, did you go to any Art Schools or did u just manage to get into the market on your own?