RIO VISTA CA (May 22, 2007) - A Joint Federal-State-Local-Private Task Force continues efforts to save two humpback whales in the Sacramento River. Day 10.  The young whale flaps it's tail in the vicinity of the boat from the Cascadia Research Collective.  VIRIN: 070522-G-1286H-503 USCG Photo by Eric J. Hebert Photo Corps, Public Affairs Department United States Coast Guard Auxiliary Department of Homeland Security  This image is a work of a United States Coast Guard service personnel or employee, taken or made during the course of a serviceman or employee's official duties. As a work of the U.S. federal government, the image is in the public domain (17 U.S.C. § 101 and § 105).