Related videos for "shark"
Managing Shark Populations in Alaskan Waters
NOAA Fisheries shark biologist, Cindy Tribuzio explains the science behind assessing the age of a shark–in this case– the Pacific spiny dogfish, and finding out their range and areas of travel.
Select footage of sharks including whitetip reef shark, Caribbean reef shark, spiny dogfish (Pacific), tiger shark, Galapagos shark, angel shark, thresher shark, nurse shark and leopard shark.
Shark researchers Nancy Kohler and Lisa Natanson explain why it's important to be able to know the age of a shark.