Name That Nudi

We saw a bunch of these tiny nudibranchs at Manta Ray Bay yesterday. They're really tiny -- about 2mm. I was glad I was set up with my 60mm micro, and I was really glad I had Genuine Fractals installed on my computer, or I wouldn't have been able to render this thing.

It doesn't really have a common name, but they call it a "Yellow Sand" or "Corn Kernel" nudibranch.

Anyone know its scientific name? I tried Google real quick, but it'll take more effort than I have time for, given that I'm on my way out the door to go diving again. If you know it, or know how to find it, leave me a comment here. Thanks!

Aloha...