OKINAWAN
OPISTHOBRANCH OF THE WEEK

Janolus sp. 1 (63mm)

Opisthobranch of the Week Data

Taxonomy:

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


Species Account:

        Janolus sp. 1 is considered to be very rare in the waters of Okinawa's main island as I have collected only three specimens. The above featured animal was collected from the surface of open sand with occasional scattered pockets of coral rubble in an area of periodic strong bottom currents. I've added a second page with images of the two additional specimens, collected seventeen days earlier from approximately the same general area as the featured animal; the two animals were found crawling on the surface of open sand roughly a meter apart from each other. All three of the animals are identical in external appearance. Incidentally, my lab notes indicate that all three specimens autotomized their cerata in the relaxant (propylene phenoxitol).

        I've previously featured Janolus toyamensis, J. savinkini, & J. mirabilis as well as seven additional unknown Janolus species on these pages, these featured animals are:

  • J. mirabilis
  • J. savinkini
  • J. toyamensis
  • J. sp. 1 (the above featured animal)
  • J. sp. 2
  • J. sp. 4
  • J. sp. 5
  • J. sp. 6
  • J. sp. 7
  • J. sp. 8

  • Page Date: 24 May '04
    Page Modification Date: 01 Sep '14
    Digitally manipulated photo
    Copyright © 2014 Robert F. Bolland