The Ancula gibbosa is a tiny nudibranch (max 33 mm) that has eluded me for at least fifteen years. This one was actually found by accident. While swimming through some eelgrass, some algae got caught on my arm. When I went to pull it off, I noticed a tiny tiny white critter moving. I only recognized it as a nudibranch once I had the microscopic setting on my camera zoomed in. Apparently, this is relatively common throughout the northern hemisphere, but rarely seen. This individual was approximately 10 mm and was found in the low intertidal zone.
