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, almost non-existent (bay specimens with higher spire than gulf specimens), last two whorls form pointy tip; siphonal canal absent; bottom of shell with thick brown to purple callus; sunken depression (the umbilicus) with a spiraling ridge at edge of wall; aperture large, oval. |
Similar Species |
Very similar to the shark eye, N. duplicata, but the umbilicus (depression at bottom of shell) has a ridge on the edge of its wall (smooth and rounded in N. duplicata). |
Habitat |
Bay mostly |
Maximum Size |
7.6 cm (3 in) |
Other Common Names |
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Previous Scientific Names |
Polinices duplicatus |
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