basis of recordvan der Land, J. (2001). Tetrapoda, <B><I>in</I></B>: Costello, M.J. <i>et al.</i> (Ed.) (2001). <i>European register of marine species: a check-list of the marine species in Europe and a bibliography of guides to their identification. Collection Patrimoines Naturels,</i> 50: pp. 375-376 (look up in IMIS) [details]
additional sourceJefferson, T.A.; Leatherwood, S.; Webber, M.A. (1993). Marine mammals of the world. <em>FAO Species identification guide.</em> FAO: Rome, Italy. ISBN 92-5-103292-0. VIII, 320 pp. (look up in IMIS) [details]
Present Inaccurate Introduced: alien Containing type locality
Present 
