Use of Haul-Out Sites by Spotted Seals (Phoca largha) on Rebun and Todojima Islands in the Japan Sea from 2008 to 2009 Shibuya, Mio and Kobayashi, Mari, Mammal Study, 39, 173-179 (2014), DOI:http://dx.doi.org/10.3106/041.039.0307