The only issue I have here is that the Plink breaks up upon being touched. If it's broken, how does it reproduce? If it's a molecular chain and that's all, it can't have any intelligence. It sounds more like a bacterial colony than anything else, perhaps a fungus? If you want to make it a semi-intelligent life form, the best way to do it might be to say that the Plink burrows in through a pore, and floats around in the bloodstream, before lodging itself into the bone marrow. Because a creature that breaks up and then reproduces doesn't make much sense, at least not to me, unless it breaks up and reassembles itself inside the body as a creature, rather than a molecule. That's just my take. Other than this, good jorb.