Polycera atra
Polycera atra, common name orange-spike polycera or sorcerer's sea slug, is a species of sea slug, a nudibranch, a marine gastropod mollusk in the family Polyceridae. Distribution. This species of polycerid nudibranch was described from California. Description. The body of "Polycera atra" is translucent white with longitudinal black lines interspersed with rows of raised yellow spots. The oral veil has 4-8 tapering yellow-tipped papillae. Ecology. "Polycera atra" feeds on the bryozoan "Bugula".