20-12-17 绿海龟是怎样在漫无边际的海洋中航行、找到阿森松岛的沙滩并在那里搭窝的？科学家们对它们的这一习性有了新的见解。 Every year between December and June, thousands of green sea turtles migrate. They go to Ascension Island to nest - females crawling ashore...