(Broderip & Sowerby, 1829)
|Maximum size: 13 mm shell
species has a flattened shell with a greatly expanded aperture and
low spire. The animal is dusky green flecked with white.
is a common species in the high intertidal in rocky habitats (occurring
higher than any other Hawaiian opisthobranch). It can be found at
highly protected to exposed sites both on rocks and overhanging tree limbs. It
is nocturnally active, feeding on micro-algae growing on the rocks or
limbs while the tide is low. It lays a flap-like, pale yellow egg mass
that's attached by one edge.
Big Island, Maui, Molokai, Oahu, Kauai and Nihoa: widely distributed in
This species is referred to as the "calyx bubble shell" in Hoover, 1998 &
2006. Smaragdinella viridis
(Rang, 1871) is a synonym (Kay, 1979) and it is listed under that name
in Pilsbry, 1921 and Edmondson, 1946. It was probably first reported from
Hawaii in von Martens, 1871.
10 mm: found by Darcy Kehler; Hekili Point, Maui; May 20, 2008.
Observations and comments:
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