Janthinidae: Janthina exigua Lamarck, 1816 (‘little violet-snail’)
Synonym(s): exigua Lamarck, 1816 bifida Jay, 1839 capreolata Montrouzier, 1859.
Typical shell-length 20 mm. High-spired, with relatively small body-whorl. Lives afloat on ocean surface by means of a bubble-raft. Native. Occurs all around Australia (QLD, NSW, TAS, VIC, SA, WA and NT); also widespread elsewhere in warm seas. In Tasmanian waters, this species is seldom beached; most likely to be found around Flinders Island and on E coast.
Subclass: Caenogastropoda – Sorbeoconcha
Order: Hypsogastropoda – Littorinimorpha
Localities for Janthina exigua
Bangor: Two Mile Beach
Flinders Island: Northeast River: mouth
Flinders Island: Swimming Beach
Flinders Island (unlocalised)
Freycinet Peninsula: Wineglass Bay
Maria Island: Darlington Bay
Nubeena: Roaring Beach
Port Arthur: Safety Cove
Schouten Island: Sandspit Point
The Gardens: Taylors Beach