2 Texas A&M University - Corpus Christi, 6300 Ocean Drive, Corpus Christi, TX 78412, USA.
3 Massachusetts Institute of Technology - Woods Hole Oceanographic Institution Joint Program in Oceanography, 77 Massachusetts Ave, Cambridge, MA 02139, USA.
4 Biology Department, Woods Hole Oceanographic Institution, 266 Woods Hole Rd, Woods Hole, MA 02543, USA.
5 Dolphin Quest, Oahu, 5000 Kahala Ave, Honolulu, HI 96816, USA.
Summary: Our paper highlights how temporal changes in tidal volume and the oxygen exchange ratio significantly affect the accuracy of models that use only breathing frequency to estimate metabolic rate.