Polycera sp. 1 (8mm)
Photo by Atsushi Ono

Opisthobranch of the Week Data


Frequency on Okinawa: Collection Data:
[brackets indicate range for all Okinawa-collected specimens of the species]

Species Account:

        Polycera sp. 1 is unknown from Okinawa's main island as of mid-December, 2005. Atsushi Ono reports (pers. comm.) seeing an excess of 20 specimens from the Keramas but has collected only a single individual. Ono (2004) has images of two different individuals in his most recent book (Polycera sp. 3, p. 102).

        The above featured animal is one which was found on a bryozoan colony on the hidden side of a rock surface in the waters 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 collected by Atsushi Ono during April of 2005 in twenty five meters of water. Atsushi's photograph is used here with his kind permission.

        Previously, four described Polycera species have been featured on these pages, all from the Kerama Islands. These four species are:

  • P. abei
  • P. fujitai
  • P. japonica
  • P. risbeci
  • Literature Cited:

    Page Date: 19 Dec '05
    Page Modification Date: 19 Dec '05
    Digitally manipulated photo
    Copyright © 2005 Robert F. Bolland