Opisthobranch of the Week Data
Atsushi Ono considers Cuthona acinosa to be very rare in the waters of the Keramas*. Atsushi reports seeing, photographing, and collecting only the above single animal; this featured animal was found by Atsushi in seven meters of water on a sandy bottom and the image of this animal is used here with Atsushi's kind permission. In addition to Atsushi's photograph, there are a series of images of C. acinosa from the Amami-Oshima Islands (see: maps 1 & 2), posted on Jun Imamoto's Sea Slug Site.
I've not found Cuthona acinosa in the waters of Okinawa's main island as of the current date. In addition to the above featured animal I've previously featured on these pages the following species of Cuthona:
C. diversicolor C. ornata C. pupillae C. purpureoanulata C. sibogae C. yamasui C. sp. 1 C. sp. 2 C. sp. 3 C. sp. 4 C. sp. 5
* Keramas = the Kerama Islands Group, located 30 ~ 40 kilometers west of the Okinawa capitol, Naha.