1. Marine and Freshwater Research Centre; Galway-Mayo Institute of Technology; Dublin Road Galway H91 T8NW Ireland
2. Shannon Dolphin and Wildlife Foundation; Merchants Quay; Kilrush V15 E762 County Clare Ireland
3. Sarasota Dolphin Research Program; Chicago Zoological Society; ℅ Mote Marine Laboratory 1600 Ken Thompson Parkway Sarasota Florida 34236 U.S.A.
4. Marine Vertebrate Research Group; School of Marine Science and Engineering; Plymouth University; Drake Circus Plymouth PL4 8AA United Kingdom