Opisthobranch of the Week Data
Tergipes sp. 1 is considered to be very rare in the waters of Okinawa's main island as I have seen and collected a total of three individuals (3 individual specimens were simultaneously collected from the same spot). I assume this is an undescribed species and if so, it's one of two undescribed species found here as of the current date; the second species will be presented at a future date. Other members of the genus (e.g., T. tergipes) are known to feed on campanularid hydroids (Gosliner, 1987), however, Tergipes sp. 1 was not found associated with any recognizable feeding resource.
The above featured animal is one of the three collected animals which were found beneath the surface of a water-logged tree branch in thirty feet of water. As the tree branch was overturned the three specimens were found on the surface of a series of egg clusters. I've added a second page with a pair of additional images, one of which shows the three animals on the egg clusters. Incidentally, I can't be certain these eggs were deposited by the three animals (there would appear to be an inordinate amount of egg clusters for only three relatively small animals?).