Common name : frog shells
Aspect : thick, heavy shell usually with two varicose veins (ribs lengthwise). Characterized by a deep channel at the top of the opening. In contrast, the siphonal canal is quite short. Operculum.
Feeding : sea urchins, worms, bivalves
Environment : warm waters, among the corals
Bursa granularis (Röding, 1798)
Bursa ranelloides (Reeve, 1844)
Tutufa bufo (Röding, 1798)