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People are [---1---] by sharks, but scientists still have a lot to learn about them. That's according to Washington Post science reporter Juliet Eilperin, whose new book on sharks is called Demon Fish. The book was released in June 2011. Here she is.

What's happened is there advances in technology particularly in terms of tracking, things like [---2---], radio transmission, that have allowed scientists to get a better sense of all sorts of shark behavior.

Eilperin said that, for example, scientists studying in great white sharks off the U.S. Pacific coast have been able to identify with precision how many sharks are living there and their pattern of migration to the Hawaiian islands.

What we've learned is that they have as regular migration pattern as wildebeest in Africa, that are traveling on land. [---3---] In addition we simply had no idea how many whites are out there.

Sharks have a built-in compass, called [---4---], that allows them to migrate long distances and to navigate the underwater highways of the earth oceans.

For example, hammerheads go out at night on certain patterns, find food, and then find their way back home, and they shift where they go, when [---5---] of the Earth shift.
fascinated satellite tagging They're much more directed than we realized before. electroreception magnetic patterns
[擴(kuò)展閱讀-Featured Scientist] Juliet Eilperin Juliet Eilperin is author of the new book Demon Fish, which was published in June of 2011. She’s also a reporter for the Washington Post, which she joined in 1998 as its House of Representatives reporter. Since April of 2004, she has covered the environment for the Post’s national desk, reporting on science, policy and politics in areas including climate change, oceans, and air quality. In pursuit of these stories she has gone, according to the Washington Post, “scuba diving with sharks in the Bahamas, trekking on the Arctic tundra, and searching on her hands and knees for rare insects in the caves of Tennessee.”