Attributes / relations provided by
♦ ¹THE FOOD OF YELLOWFIN AND SKIPJACK TUNAS IN THE EASTERN TROPICAL PACIFIC OCEAN, FRANKLIN G. ALVERSON, INTER-AMERICAN TROPICAL TUNA COMMISSION Bulletin, Vol. VII, No. 5 (1963)
♦ ²Food 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