Pacific Coast Nudibranchs
Nudibranchs, or sea slugs, belong to the subclass Opistobranchia which means "naked gill" of the class Gastropoda. Features of this subclass also include all members being hermaphroditic and having the atrium of the heart posterior to the ventricle
Guide to Aquatic Science Resources
Indexes and abstracts, literature reviews, bibliographies, handbooks, manuals, directories, guides, and links to oceanographic data sources. Fogler Library (University of Maine) ME, USA.
Information about research on cephalopods. Department of Zoology University of Aberdeen Scotland, United Kingdom.