Opisthobranch of the Week Data
Cyerce sp. 2 is considered to be very rare on Okinawa's main island as I have seen and collected only the above single individual. The animal was collected toward the end of a mid-morning SCUBA dive from a surge channel near shore. It was discovered crawling on the undersurface of a 20mm diameter rock from the bottom of the surge channel covered with mixed sand, gravel, rock and coral rubble.
The prominent dorso-lateral papillae which vary in size are lightly covered w/ fine dark reticulated lines. The large irregular white mid-dorsal pigment patch would appear to be unique to described species of Cyerce. I've added a second page with two additional images of the same animal showing a bit more detail.
The only described species of Cyerce found on Okinawa's main island as of the current date is Cyerce kikutarobabai. In addition to the above featured animal, several other undescribed or unknown species have been found here as well. One of these undescribed species was previously featured on this site as Cyerce sp. 1.