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Pyramid Periwinkle

Nodilittorina pyramidalis!


Shell sculptured with two rows of strong nodules on centre of body whorl and one row at lower third of spire whorls; whole surface overlaid with fine spiral cords and irregular axial growth lines. Columella wide, smooth, outer lip thin and simple. Colour grey, nodules fawn or white, aperture fawn or brown with two white bands within. Operculum corneous. Size: Up to 26.8 mm in length; commonly less than 15 mm.


On exposed coasts and moderately sheltered shores, near and above high tide level, sheltering in pits and crevices. Specimens have been recorded living at 10 m above the high tide mark. Abundant.


These shells have an attitude of sitting on top of each other like that of a cheer dance pyramid and maybe that's where it got its name.

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1 Comment

AshleyT 3 years ago

Your spotting has been nominated for the Spotting of the Week. The winner will be chosen by the Project Noah Rangers based on a combination of factors including: uniqueness of the shot, status of the organism (for example, rare or endangered), quality of the information provided in the habitat and description sections. There is a subjective element, of course; the spotting with the highest number of Ranger votes is chosen. Congratulations on being nominated!

Capiz, Philippines

Spotted on Sep 16, 2017
Submitted on Sep 21, 2017

Spotted for Mission

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