Gazelle : The Palestinian Biological Bulletin (ISSN 0178 – 6288) . Number 160, April 2018, pp. 1-38. | Page 4

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The word "nudibranch" comes from the Latin nudus, naked, and the Greek βραγχια,
brankhia, gills (Wikipedia).
Nudibranchs are often casually called sea slugs, but many sea slugs belong to several
taxonomic groups which are not closely related to nudibranchs. A number of these
other sea slugs, such as the photosynthetic Sacoglossa and the colourful Aglajidae, are