Opisthobranch of the Week Data
Nembrotha livingstonei is considered to be uncommon in Okinawan waters; I've not personally seen the animal here on Okinawa's main island, however I've previously featured several additional members of the genus from Okinawan waters (included in the list below). Atsushi mentions (pers. comm.) seeing in excess of ten individuals in the Keramas*. I've added a second image of N. livingstonei from the Keramas, also kindly furnished by Atsushi.
Bill Rudman has a series of photographs of Nembrotha livingstonei posted on the Sea Slug Forum and I've added the following comments concerning the species from the Forum posting (Rudman, 1999) as well:
It is characterised by a dark reddish brown to dark green or black body with orange, reddish brown, green and white spots. There are distinctive cross-like white patches, outlined in blue, around the gill pocket, and between the rhinophores. In one specimen from eastern Australia many of the spots are green rather than orange. It was previously known from western Australia and the Great Barrier Reef.
Previously I've featured several members of the genus Nembrotha on these pages and as of the current date, there are several described and undescribed species reported from Okinawan waters. These featured animals are as follows:
N. guttata N. kubaryana N. lineolata N. livingstonei (the above featured animal) N. milleri N. species 1
* Keramas = the Kerama Islands Group, located 30 ~ 40 kilometers west of the Okinawa capitol, Naha.