Volvatella have a large, weakly calcified, bulloid-shaped shell. At its posterior end, the shell narrows into a funnel or spout. The foot is relatively short . On the head is a pair of rounded oral lobes and a pair of somewhat flattened, rounded rhinophores.When this species disturbed, it produce a sticky white secretion .
Volvatella slugs feeds on the greenalgae Caulerpa.
Volvatella viridis; Described from Japan where it was reported to feed on Caulerpa racemosa. Shell approx 12mm long. When alive the shell appears deep green due to the colour of the mantle.