Detailed text transcripts for TV channel - MSNBC - 20150528:18:55:00
Astoning 20,000 miles and katherine, 13,679 miles. in all, 53 great white sharks tagged and transmitting. so far, no discernible pattern. >> we're getting a sense of the scope at least of their movement. they're far more dynamic than we thought. >> reporter: from the coast off nantucket south to miami beach and into the gulf of mexico we now know great whites are frequently yards from the beach. a few charitable trust study says an estimated 100 million sharks are killed each year by commercial fisheries. at that rate 1/3 of all the 500 shark species are threatened with extinction, including s...
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