The Origami Forum

Check it out.

If you visit the site, you should see an origami turtle there up the screen.
Where can i get the folding instructions of that?

I'm pretty sure that turtle is the one by Stephen Weiss in Origami Zoo by Dr. Robert J. Lang & Stephen Weiss.
It can be purchased for ~$15 on Amazon - possibly cheaper elsewhere!

The actual turtle has a colour change for the flippers and head if folded from duo paper.