Description: English: This adult common thresher shark was caught, tagged, and released alive during the 2009 Juvenile Shark Survey off of the Channel Islands. The hose in the sharks mouth pumps seawater across the gills so that the shark can breathe during the tagging operation. Date: 24 August 2009. Source: http://swfsc.noaa.gov/gs/Default.aspx?moid=905. Author: SWFSC Large Pelagics Program.