This month I had the good fortune of seeing one of the rarest nudibranch ever to be seen. The Kalinga Ornata Nudibranch. As an added bonus, it was also feeding on brittle stars. Having searched the internet, I have been unable to find any video of this beautiful nudibranch, let alone while it was feeding. This was on a night dive, in a silty dive site, so the visibility isn't the greatest, but still an awesome experience.
Thanks to Alexis for finding it for me!
I used a Canon 5d Mark II with a 100mm macro lens and a +10 Subsee Diopter.