Title Physiology of elasmobranch fishes. Structure and interaction with environment / edited by Robert E. Shadwick, Department of Zoology, the University of British Columbia, Vancouver, British Columbia, Canada, Anthony P. Farrell, Department of Zoology, and faculty of land and food systems, the University of British Columbia, Vancouver, British Columbia, Canada, Colin J. Brauner, Department of Zoology, the University of British Columbia, Vancouver, British Columbia, Canada.