The knobbed surface of these shells has resulted in the common family name “toad shells” probably because they resemble the bumps on a toad’s back. The toad shells are characterised by a series of abandoned siphon canals protruding from the spiralling folds of the shell. These were created and abandoned as the shell grew with only one in use at a time. The siphons all lie on the same plane, protruding to the right or the left of the shell indicating that it has growth spurts in which a half turn of new shell is laid down at a time. These growth periods are quite times for the toad shell, when it will find a good hiding place and remain there until the new shell has formed and thickened. Like he tritons, toad shell posses an acid secretion with which they paralysed their prey of various worms. They can be found from shallow tide pools to extremely deep water and are most often heavily encrusted with corralling algae and other organisms.