Opisthobranch of the Week Data
I've personally never found Eubranchus sp. 2 in the waters of Okinawa's main island but Atsushi mentions (pers. comm.) that it's a common species that can be observed all year round in the waters of the * Keramas. The above photograph was taken by Atsushi from the waters of Aka Island during October of 2015 and he reports finding it on hydroids found in a sandy bottom environment. Atsushi's photograph is used here with his kind permission.
There is an image of a comparable animal in the new Gosliner, et al (2015) publication (p. 341, Eubranchus sp. 25). In addition, Mike Miller has a similar appearing animal from Indonesia posted on his Slug Site by Francis Pellet.
As of the current date (December, 2015) I've previously featured on these pages two members of the genus, E. mandapamensis and E. sp. 1, both also found in the waters of the Keramas.
* Keramas = the Kerama Islands Group, located 30 ~ 40 kilometers west of the Okinawa capitol, Naha.