 Sperm whales are listed on Appendix I and Appendix II of the Convention on the Conservation of Migratory Species of Wild Animals ( CMS ) . It is listed on Appendix I as this species has been categorized as being in danger of extinction throughout all or a significant proportion of their range and CMS Parties strive towards strictly protecting these animals , conserving or restoring the places where they live , mitigating obstacles to migration and controlling other factors that might endanger them . It is listed on Appendix II as it has an unfavourable conservation status or would benefit significantly from international co @-@ operation organised by tailored agreements . It is also covered by the Agreement on the Conservation of Cetaceans in the Black Sea , Mediterranean Sea and Contiguous Atlantic Area ( ACCOBAMS ) and the Memorandum of Understanding for the Conservation of Cetaceans and Their Habitats in the Pacific Islands Region ( Pacific Cetaceans MOU ) . 
