【BBC南太平洋】漂流者 12

英语自学网

You might think it would be easy for a fish to swim between these small islands. But not so. You wouldn't find these little fish in deep water. The open ocean beyond their shallow reef is, in fact, a huge barrier.So how did all these fish come to be here? Colonising new reefs is a challenge faced by fish across the South Pacific, but they have a simple solution. Once a year, thousands of groupers gather on the reefs. With the coming of the full moon, an extraordinary event unfolds. They spawn. A female darts up and releases millions of eggs, quickly followed by the males, who jostle to fertilise them.