Southern New England Nudibranchs

Nudibranchs are Paul's favorite animals. Here are some of the local species. We are not experts on these animals. So we may have misidentified some of them. If you find an error, email us and we will correct it.

Dorids, the most numerous nudibranchs, are able to retract their gills into a gill pocket.

Barnacle-eating onchidoris, Onchidoris bilamellata

Fuzzy onchidoris, Onchidoris muricata

White Atlantic cadlina, Cadlina laevis

Yellow-edge cadlina, Cadlina luteomarginata

Pleurobranchs are side-gill sea slugs, or notospideas, typically found in tidal and subtidal areas worldwide.

Pleurobranchaea tarda

Dendronotids have elongated bodies with numerous branching cerata on their dorsal sides. The cerata contain extensions for the digestive gland which vary in extent between species. The head has an oral veil having branching extensions. The lamellate rhinophores are surrounded by a sheath and branches extensions.

Frond aeolis (bushy-backed) nudibranch, Dendronotus frondosus

Doto fragilis (formosa)

Doto coronata

Aeolids have cerata containing cnidosacs, the white tips. The Flabellina verrucosa is probably the most common nudibranch found in our waters.

Cuthona viridis

Shag-rug aeolis (Maned nudibranch), Aeolidia papillosa

Dwarf balloon aeolis, Eubranchus exiguus

Eubranchus pallidus

Tergipes tergipes

Favorinus blianus

Red-finger aeolis (Red-gilled nudibranch), Flabellina verrucosa

Salmon aeolius (Salmon-gilled nudibranch), Flabellina salmonacea

Flabellina gracilis


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Last modified 23 March 2025