OKINAWAN
OPISTHOBRANCH OF THE WEEK
Cerberilla affinis Bergh, 1889 48mm
Opisthobranch of the Week Data
Taxonomy:
- Order: NUDIBRANCHIA
- Suborder: Aeolidacea
- Family: Aeolidiidae
Frequency on Okinawa:
Collection Data:
- Individual Collection No: RFB #2181
- Location: Seragaki (26o 30.4' N, 127o 52.6' E)
- Date: 6 June 1989 [6 Jun '89, 21 Oct '89, 4 Jul '90, 8 Nov '96]
- Depth: 60ft (55m) [10ft, 60ft, 90ft, 180ft]
- Size: TL 48mm [27mm, 46mm, 48mm, 67mm]
- Water temperature at collection depth: Unrecorded
- Specimen deposited: Unknown disposition (photo only?)
[brackets indicate range for all Okinawa-collected specimens of the species]
Species Account:
Cerberilla affinis is considered to be rare on Okinawa as I have seen and collected a total of only four individuals over a period of more than thirty years of diving here. One of the four specimens (57mm individual) was found in a sandy-bottomed tide pool at "Onna Flats" (26o 28.4' N, 127o 50.8' E) during a daytime minus tide excursion. All others were collected from mixed sand/coral rubble at Seragaki while on SCUBA.
I've added a second page with images of two additional specimens.
Page Date: 07 Oct '96
Page Modification Date: 04 Aug '08
Digitally manipulated photo
Copyright © 2008 Robert F. Bolland
