M-920 PYGMY DOG WHELK, Nassarius vibex

In a sand aquarium, they remain buried until a piece of fish is dropped in, and within minutes their siphons pop up like small periscopes and they converge on the meat. Nassarius will readily regenerate its tentacles, eyes, frontal lobe, operculum, foot and siphon. It has a long proboscis and moves by ciliary waves on foot. Preyed upon by tulip shells whose trails produce violent evasive action by Nassarius. Size: 1-1.5 cm.