![fish01-sharktagging_01](https://www.kcaw.org/wp-content/uploads/2013/02/blue_shark.jpg?x94538)
Capt. Art Gaeten holds a blue shark that was caught during a research trip in Nova Scotia. Scientists are studying the impact of swordfish fishing methods on the shark population. (NPR photo/Dean Casavechia)
Capt. Art Gaeten holds a blue shark that was caught during a research trip in Nova Scotia. Scientists are studying the impact of swordfish fishing methods on the shark population. (NPR photo/Dean Casavechia)