阅读短文,回答问题There is a competition for photographers (摄影师) of wildlife in the Natural History Museum in London every year. This year, the competition had about 50,000 photos.These photos come from different parts of the world. They take us underwater, deep into the woods, and high above cities. All of them show different kinds of life on earth.
In the end, the great prize went to Laurent Ballesta. The French photographer won the prize for his photo of a horseshoe crab. In the photo, the horseshoe crab looks for food in the sea. Three little fish follow it closely. They may hope to eat what the horseshoe crab misses.
Horseshoe crabs are known as "living fossils (化石)". They have lived for at least 445 million years and stayed almost unchanged. They're now in great danger, however. What happened to them? In the 1960s, scientists found something surprising. The blue blood of horseshoe crabs can be used for scientific study. As a result, hundreds of thousands of them are caught each year.
For a long time, Ballesta took photos of horseshoe crabs in the sea. His winning photo took the judges (评委) by surprise. "To see a horseshoe crab so alive and well, in such a beautiful way, was fantastic," said one of them.
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