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Hydatina zonata
 
(Solander in Lightfoot, 1786)
 
Hydatina zonata: shell
Maximum size:  40 mm shell length (Kay, 1979).

Identification:  This species has a thin, strongly inflated, cream shell marked with wide spiral brown bands.

Natural history:  Hydatina zonata is a rare species found in sand at depths of 30-60 m (100-197 ft).

Distribution:  Maui and Oahu.

Taxonomic notes:  This species is listed in Kay, 1979, Edmondson, 1946, Quirk & Wolfe, 1974, Morris, 1974 and Tinker, 1958 as Hydatina albocincta (Quoy & Gaimard, 1825) which is probably a synonym (see discussion on the Sea Slug Forum).

Photo:  Mike Severns: 30 mm: composite photo, same shell: 30 m (100 ft); Maui; from Cook collection.

Observations and comments:

Note 1:  ( )
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