Global Short Term Trend: Decline of 50-70%
Comments: Anecdotal evidence, negative scientific survey data, and catch records indicate a dramatic decline in recent decades in North America (NMFS 2000, 2001, 2003). Population in Everglades National Park may have been stable in the 1990s (Simpfendorfer 2002).
Global Long Term Trend: Decline of >90%
Comments: Regarded as common in inshore waters of the Gulf of Mexico and western North Atlantic in the late 1800s and early 1900s (see Simpfendorfer 2002). Wholly or nearly extirpated from large areas of the former range in the North Atlantic (Mediterranean, U.S. Atlantic and Gulf of Mexico) and the southwestern Atlantic; status elsewhere is uncertain but likely similarly reduced (NMFS 2001). Abundance in the United States likely is less than 5% of historical level (Simpfendorfer 2002).