Aeolidiella oliviae. Went out to Fitzgerald Marine Reserve today with Arch and Jessie, and met up jalbersmead for some 'branch action. We saw plenty of cool stuff, and it was great meeting someone from Flickr in meatspace! Sadly, very few of my pics came out. This DSLR brings about equal parts delight and maddening frustration.

Matt Knoth had seen this guy out on the reef recently, told John where he'd seen it, and lo and behold, it was still there, same pool. Madness.