Common dolphin believed to be due to extensive human activity in the area. In the US, they are a protected species and sometimes are caught by accident in some trawler nets as bycatch, though despite this they are still quite common throughout their range. Despite these potential threats, the short-beaked common dolphin is considered to be Least Concern by the IUCN Red List, and the long-beaked common dolphin is listed as Data Deficient. The short-beaked common dolphin "Delphinus delphis" is listed globally on Appendix II of the Convention on the Conservation of Migratory Species of Wild Animals (CMS). As amended by the
USS Delphinus (AF-24) at Manila in January 1946, "Delphinus" sailed for the west coast, arriving at San Francisco, California, 23 February. For a brief period she carried cargo along the west coast and to Pearl Harbor, then sailed to New Orleans, Louisiana. "Delphinus" was decommissioned on 8 May 1946 in New Orleans, and was delivered to the War Shipping Administration the same day. USS Delphinus (AF-24) USS Delphinus (AF-24) was built in 1915 as by Workman Clark and Co., Ltd., Belfast, Northern Ireland; acquired by the U.S. Navy 11 August 1942; and commissioned the same day as "San Mateo", Lieutenant O. M. Mikkelsen,