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Nudibranchs | The Colorful World of Sea Slugs (49 images)

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A nudibranch is a member of a suborder of soft-bodied, marine gastropod mollusks.

The word 'nudibranch' comes from the Latin nudus, naked, and the Greek brankhia, gills. They are noted for their often extraordinary colors and striking forms.
Nudibranchs are often casually called 'sea slug', but many sea slugs belong to different taxonomic groups not related to nudibranchs.
Nudibranchs vary in adult size from about 1-60 cm and have cephalic (head) tentacles sensitive...
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