Distinguishing Characteristics |
Gastropod (1 shell); shell spiral in shape, smooth, short and wide, body whorl makes up most of shell; color greenish gray to light brown, sometimes with orangish brown markings, base of shell usually white; spire low but pointed, siphonal canal absent; bottom of shell with thick brown to purple callus; sunken depression (the umbilicus) smooth (no spiral ridge) at the edge of wall; aperture large, oval. |
Similar Species |
Very similar to the false shark eye, N. delessertiana, but the umbilicus (depression at bottom of shell) is smooth and rounded on the edge of its wall (ridged in N. delessertiana). |
Habitat |
Gulf and bay |
Maximum Size |
7.6 cm (3 in) |
Other Common Names |
Atlantic moon snail |
Previous Scientific Names |
Polinices duplicatus |
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