1. Department of Biology, University of South Florida, 4202 E. Fowler Avenue,SCA 110, Tampa, FL 33620, USA
2. Department of Mechanical Engineering, University of South Florida, 4202 E. Fowler Avenue, ENB 118, Tampa, FL 33620, USA
3. Center for Shark Research, Mote Marine Laboratory, 1600 Ken Thompson Parkway, Sarasota, FL 34236, USA