Attributes / relations provided by
♦ ¹McMeans, Bailey C., et al. "The role of Greenland sharks (Somniosus microcephalus) in an Arctic ecosystem: assessed via stable isotopes and fatty acids." Marine Biology 160.5 (2013): 1223+. Academic OneFile. Web. 14 July 2014.
♦ ²Monodon monoceros, Randall R. Reeves and Sharon Tracey, Mammalian Species No. 127, pp. 1-7 (1980)