They are also listed in Appendix II of CITES (Convention on International Trade in Endangered Species of Wild Fauna and Flora) - search by genus and species (Orcinus orca):
http://www.cites.org/eng/resources/species.html
- and in Appendices I and II of CMS (Convention on Migratory Species):
http://www.cms.int/reports/small_cetaceans/data/o_orca/o_orca.htm