Distinguishing Characteristics |
Gastropod (1 shell); shell spiral in shape, conical, longer than wide; color grayish white to yellow (may be greenish due to algae), light streaks of purple or reddish brown; spiraling ridges; 8-10 flat-sided whorls; sutures between whorls hard to discern; spire pointed; aperture oval with grooves inside outer lip. |
Similar Species |
Other area periwinkles have more distinct color patterns. The cloudy periwinkle has rounded whorls and is usually found on harder substrates. |
Habitat |
Bay, found attached to marsh grasses or harder substrates above the tide line |
Maximum Size |
3 cm (1 1/5 in) |
Other Common Names |
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Previous Scientific Names |
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Comments |
Air breather. |