Opisthobranch of the Week Data
This attractive little cephalaspid, Noalda sp. 3, is unknown from Okinawa's main island as of late-December, 2011. The above featured animal is one which was photographed from an area amid a coral rubble environment off of Gahi Island, one of a series of islands in the Kerama Islands Group, which are located 30 ~ 40 kilometers west of the Okinawa capitol, Naha. This featured animal was photographed by Atsushi Ono during March of 2009 in twenty-two meters of water. Atsushi's photograph is used here with his kind permission. It should be noted that Atsushi considers the species to be very rare in the Kerama Islands as he has seen and collected only the above single individual (pers. comm.).
Noalda sp. 3 is similar to an animal depicted in Bill Rudman's Sea Slug Forum (a 6mm animal from Indonesia, as Noalda sp. 1), as well as one seen in Gosliner, Behrens, & Williams (2008), p. 37 as Noalda sp. 1.
As of the current date (late Dec '11) three undescribed species of Noalda are known from Okinawan waters and are featured on these pages. These three species are:
Noalda sp. 1 Noalda sp. 2 Noalda sp. 3 - The above featured animal