Photo of <i>Ceratophyllidia papilligera</i> (Bergh, 1890). Synonym: <i>Phyllidiopsis papilligera</i> (Black-spotted Nudibranch).
<a href="//commons.wikimedia.org/wiki/User:Nhobgood" title="User:Nhobgood">Nhobgood</a> Nick Hobgood
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span>