Seanet Mid/Low Intertidal

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Serpulorbis squamigerus (Carpenter 1857)
Phylum Mollusca, Class Gastropoda, Subcl. Orthogastropoda, Superorder Caenogastropoda, Order Sorbeoconcha, Family Vermetidae

Tube snail; shell attached to rock & uncoils with growth, forming scaly tube with longitudinal ridges; aperture 12 mm; lacks operculum.

Abundant on rocks; solitary or in clusters, mid-intertidal zone to subtidal. Aggregations arise from gregarious larval settlement, not asexual division. Suspension feeds using mucus net.

Geo Range: Monterey Bay to Baja
Synonyms: Aletes squamigerus
Similar species:
Petaloconchus montereyensis is much smaller in diameter and lives primarily in subtidal.