Attributes / relations provided by
♦ ¹"Trophic habitat of the Pacific sharpnose shark, Rhizoprionodon longurio, in the Mexican Pacific", Vanessa Guadalupe Alatorre-Ramireza, Felipe Galván-Magañaa and Yassir Edén Torres-Rojas, Journal of the Marine Biological Association of the United Kingdom, 2013
♦ ²Seasonal and Annual Variability in the Diet of California Sea Lions Zalophus californianus at San Nicolas Island, California, 1981 -86, Mark S. Lowry, Brent S. Stewart, Carolyn B. Heath, Pamela K. Yochem, John M. Francis, Fishery Bulletin. U.S. 89:331-336 (1991)