Yes, that is a crochet turtle on a fingertip. And it’s legs are movable. This is from Etsy seller Muffa. I spotted some of her work a while back on another site, but came across it again recently. I am totally in awe of this artistic excellence!
If you want to be a complete snob about yarn, this may not be the blog to follow. I’m here for 100% acrylic as much as 100% alpaca, and won’t ever feel bad about that. People who aren’t wealthy deserve to be welcome in the crafting world, too.