我们已经教过海洋动物在水下如何定位，也讲了它们如何辨别方向。这就引出了一个有趣的谜题，我相信大家对此都很感兴趣。
We have been talking about how sea animals find their way underwater, how they navigate, and this brings up an interesting puzzle, and one I'm sure you'll all enjoy.
“煮沸海洋”（意思是尝试做太多事情）和仅仅是一个特性之间有一条细线，那正是你的自我定位。
There is a fine line between “boiling the ocean” (trying to do too much) and being just a feature, and that’s where you want to position yourself.
他说，专家们综合使用DNA分析、视频、水声及手机等技术定位各种海洋生物所在海域。
He said experts have used a combination of DNA analysis and video, acoustic and cell phone technology to figure out what's living where, in the sea.
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