OKINAWAN
OPISTHOBRANCH OF THE WEEK

Hydatina amplustre (Linnaeus, 1758) 14mm

Opisthobranch of the Week Data

Taxonomy:

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


Species Account:

        Hydatina amplustre is considered to be uncommon on Okinawa although I have collected only a single living individual over many years of diving here. I've picked up more than fifteen empty shells at several Okinawan localities between intertidal and ten feet of depth. The featured animal was collected crawling on the surface of silty-sand, amid spur and groove formations near the reef edge.


Copyright © 1999 Robert F. Bolland
Digitally manipulated photo