Detailed text transcripts for TV channel - CNN - 20100629:00:47:00
>> reporter: on this day at sea, the lemons keep coming. three black tips, too. the blood and tissue from these guys will be tested for concentrations of hydrocarbons from oil. they can be contaminated even if they never swim through the oil. >> the fishing area has been closed in the gulf of mexico because they don't want people to catch and eat that fish. i don't know if sharks got the memo. >> reporter: because it's a natural predator, a reduced shark population impacts the balance of nature. there will be enough work scientists say to keep researchers busy studying the effects of oil on sh...
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