Acknowledgements
This work was funded by the United States National Science Foundation
(Award Numbers OCE-1061475, OCE-1450214 and OCE-1623867) to J. D.
Witman. We thank L. Dee for assistance in the field, J. Palardy for
assistance with preliminary data exploration, boat captains (L. Cruz and
W. Aguirre), others (N. Tirado, H. Jager, M. Romoleroux) at the Charles
Darwin Foundation and J. Suarez at Galápagos National Park for their
assistance. This research was performed under permits from the Galápagos
National Park and represents contribution number _______ from the
Charles Darwin Foundation for the Galápagos Islands.