Attributes / relations provided by
♦ ¹Diet analysis of Pacific sardine (Sardinops sagax) off the west coast of Vancouver Island, British Columbia from 1997 to 2008, Gordon McFarlane, Jacob Schweigert, Jackie Detering and Vanessa Hodes, Pacific Biological Station, Fisheries & Oceans Canada
♦ ²Historic and current habitat use by North Pacific right whales Eubalaena japonica in the Bering Sea and Gulf of Alaska, KIM E. W. SHELDEN, SUE E. MOORE, JANICE M. WAITE, PAUL R. WADE and DAVID J. RUGH, Mammal Rev. 2005, Volume 35, No. 2, 129–155