Buccinidae – Siphonaliinae: Penion maximus (Tryon, 1881) (‘great whelk’)

Synonym(s): maximus Tryon, 1881.

Typical shell-length 200 mm. Similar to Australaria australasia, but grows larger and lacks columellar folds and dark periostracum. Lives subtidally and offshore on sand. Native. Endemic to eastern Australia (QLD, NSW, TAS and VIC). In Tasmanian waters, this is a widespread species, but seldom beached; most beached shells are juveniles.