Reference citation: Gotshall, D.W. 2005. Guide to marine invertebrates: Alaska to Baja California, 2nd ed. (revised). Sea Challengers. 117 p.
Source citation: Palomares, M.L.D. and D. Pauly. Editors. 2018. SeaLifeBase. World Wide Web electronic publication. www.sealifebase.org, version (10/2018).