From NOAA:
The National Marine Fisheries Service (NMFS) encourages the live release of North Atlantic shortfin mako sharks (Isurus oxyrinchus) due to overfishing occurring on the population. In order to promote the live release of shortfin mako sharks, NMFS has developed a web page where commercial and recreational fishermen can contribute information about shortfin mako shark releases and populate an interactive web map. The shortfin mako live release web page contains current information on shortfin mako stock status and regulations, along with details on tagging programs and safe handling and release guidelines.
You can find the main shortfin mako live release webpage and web map at the following links.
For further information on the web page, or to request outreach materials, please contact the Atlantic Highly Migratory Species Management Division by phone at 301-713-2347, or by email at shortfinmako@noaa.gov.