Attributes / relations provided by
♦ 1Summer Diet of the Harbour Porpoise (Phocoena phocoena) in the Estuary and the Northern Gulf of St. Lawrence, Pierre-Michel Fontaine, Mike O. Hammill, Cyrille Barrette, and Michael C. Kingsley, Can. J. Fish. Aquat. Sci. 51(1): 172178 (1994)
♦ 2Offshore diet of grey seals Halichoerus grypus near Sable Island, Canada, W. D. Bowen, G . D. Harrison, Mar. Ecol. Prog. Ser. 112: 1-11, 1994
♦ 3THE DIET OF HARBOUR PORPOISE (PHOCOENA PHOCOENA) IN THE NORTHEAST ATLANTIC, M. B. SANTOS & G. J. PIERCE, Oceanography and Marine Biology: an Annual Review 2003, 41, 355390