About Atagema alba (O'Donoghue, 1927)
Scientific name: Atagema alba (O'Donoghue, 1927). One collected individual measured 30 mm in length and 11 mm in width when actively crawling. This species is distributed from Monterey Bay, California, USA, south to Ensenada, Baja California, Mexico. This dorid nudibranch feeds on sponges.