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Pleurobranchidae – Pleurobranchinae: Berthella serenitas (Burn, 1962) (‘sweet-spot sea-slug’)
Synonym(s): serenitas Burn, 1962.
Typical body-length 20 mm. Lives intertidally to offshore amongst sponges, specifically Plakina species, on which it feeds. Native. Endemic to southeastern Australia (TAS and VIC).
Classification
Class: Gastropoda
Subclass: Heterobranchia
Order: Pleurobranchomorpha
Superfamily: Pleurobranchoidea
Family: Pleurobranchidae
Genus: Berthellina
Localities for Berthella serenitas
![species image](https://molluscsoftasmania.org.au/wp-content/uploads/2017/07/no_image.jpg)
![locality map](https://molluscsoftasmania.org.au/wp-content/uploads/2018/04/Berthella-serenitas.jpg)