Attributes / relations provided by
♦ ¹Food Web Relationships of Northern Puget Sound and the Strait of Juan de Fuca : a Synthesis of the Available Knowledge, Charles A. Simenstad, Bruce S. Miller, Carl F. Nyblade, Kathleen Thornburgh, and Lewis J. Bledsoe, EPA-600 7-29-259 September 1979
♦ ²Feeding ecology of the South American sea lion Otaria flavescens: food contents and food selectivity, Mario George-Nascimento, Rodrigo Bustamante and Ciro Oyarzun, Mar. Ecol. Prog. Ser. 21 135-143, 1985