information was found
on this particular species. However, a close relative, O.
also known as O. wroblewskyi, is only
differentiated from O.
montereyensis by the number of axial ribs. The
usually has 7 ribs, while O. montereyensis
has 8-10 axial ribs.
chacei has a shell up to 30 mm high with the base delimited
by a low
spiral cord or keel. The axial ribs are broadly
shell color is white or cream.
Opalia montereyensis (Dall, 1907)
|Photo taken at Rosario Marine Station, WA
|Photo taken by Anna Dyer,
Range: O. chacei
ranges from Queen Charlotte Strait, British Columbia, to Santa Catalina
Depth Range: O.
chacei is found
in the low intertidal and subtidal zones.
chacei is uncommon
under rocks, however, it is associated with anemones.
History: O. chacei
is probably a specialized predator on sea anemones, like Epitonium
Little is known of its biology.
et al., 1980
Authors and Editors of Page:
Anna Dyer (2002): Created original page
Edited by Hans Helmstetler 12-2002