Related videos for "shark"
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Managing Shark Populations in Alaskan Waters
3:57
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.
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B-Roll: Sharks
3:16
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.
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Ageing Sharks
2:18
Shark researchers Nancy Kohler and Lisa Natanson explain why it's important to be able to know the age of a shark.