Opisthobranch of the Week Data
Marionia rubra is considered to be very rare in Okinawan waters. I've never seen the species in the waters of Okinawa's main island and Atsushi has seen only the above single featured animal in the Keramas. * Atsushi found this huge tritoniid associated with rock found in a reef environment. The images of M. rubra on these pages are used with Atsushi's kind permission. I've added a second page with three additional images of this large and beautiful animal.
Bill Rudman (2001) mentions on the Sea Slug Forum the current distribution of the species is from the Red Sea. Possibly Ono's animal featured above is an undescribed animal; unless I hear differently, I'll stick with the current species designation.
In addition to the above featured animal, I've previously shown four unknown Marionia species on these pages. These four unknown animals are as follows:
Marionia sp. 1 Marionia sp. 2 Marionia sp. 3 Marionia sp. 4
* Keramas = the Kerama Islands Group, located 30 ~ 40 kilometers west of the Okinawa capitol, Naha.