Data set is provided as a 'trip' object. This is the abstract for the work:
"We tracked movements and haulout foraging behavior of walruses instrumented with
satellite-linked data loggers from the Alaskan shores of the Chukchi Sea during the
autumn of 2009 (n=13) and 2010 (n=2)."
Jay, C. V. and Fischbach, A.S.