Oral disc to >15 cm diameter with radiating stripes; green to dark gray-green; warts (verrucae) on column in longitudinal rows, tentacles sometimes flecked or with pinkish tips. Column covered with shell debris.
Common; mid-intertidal zone to subtidal, protected outer coast; solitary in shallow crevices. Possess photosynthetic endosymbiotic zooxanthellae (a dinoflagellate).
Geo Range: Oregon to Baja
Synonyms: formerly thought to be a solitary form of the cloning Anthopleura elegantissima.
Similar species: Anthopleura xanthogrammica lacks distinct radiating markings on oral disc and its tentacles are more uniform in color; its verrucae are more randomly arranged down its column.