This is the third annual report of the Sperm Whale Seismic Study (SWSS). SWSS is a multi-institutional, interdisciplinary study supported by the Minerals Management Service (MMS) of the U.S. Department of the Interior under Cooperative Agreement 1435-01-02-CA-85186 for Cooperative Research on Sperm Whales and their Response to Seismic Exploration in the Gulf of Mexico through the Texas A&M Research Foundation. Under SWSS, scientists from Ecologic, Oregon State University (OSU), Scripps Institution of Oceanography (SIO), Texas A&M University (TAMU), Texas A&M University-Galveston (TAMUG), University of Colorado (CU), University of Durham (UD), University of St. Andrews (USA), and Woods Hole Oceanographic Institution (WHOI) develop and implement scientific research plans in coordination with MMS, the Office of Naval Research (ONR), National Science Foundation (NSF), and Industry Research Funders Coalition (IRFC).