Reference citation: Haug, T., A.B. Krøyer, K.T. Nilssen, K.I. Ugland and P.E. Aspholm. 1991. Harp seal (Phoca groenlandica) invasions in Norwegian coastal waters: age composition and feeding habits. ICES J. Mar. Sci., 48:363-371.
Source citation: Palomares, M.L.D. and D. Pauly. Editors. 2018. SeaLifeBase. World Wide Web electronic publication. www.sealifebase.org, version (10/2018).
