Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Identification of fins after observations of fin damage. a A female shark photographed in 2004 with a complete fin, in 2005 with large lacerations on the fin, and in 2008 with scars from the damage, but all other distinguishing markings intact. b A second shark showing new damage over a two-month period in 2008
