For a closer look at it, we're joined now by NPR science correspondent Jon Hamilton.

为了进一步了解它，我们请来了NPR的科学记者乔恩·汉密尔顿。

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"Never, ever wrap your hand for any reason in the line, " Burkholder said to the volunteers who were eager to do the menial labour of science in exchange for getting a closer look at the creatures they were hoping to save.

BBC: Protecting sharks off Florida��s eastern coast