Solitary Islands Marine Park spp"), as well as sacred kingfishers ("Todiramphus sanctus"), are regularly seen in the estuaries. Around 30 species of marine mammals have been recorded in the region, including the Short-beaked common dolphin ("Delphinus delphis") and bottlenose dolphin ("Tursiops truncates") who are residents throughout the year. Of particular interest in the Marine Park and Reserve are those species listed as threatened and subject to national and international conventions. These mammals include humpback whales ("Megaptera novaeangliae"), who are commonly encountered in the area as they migrate north to their breeding grounds in June and July, and then again between September and November when
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,