해커스readingsmart1 6-2 바닷속 미스터리 서클 скачать в хорошем качестве

해커스readingsmart1 6-2 바닷속 미스터리 서클

2 바닷속 미스터리 서클 One day, a number of divers discovered something strange on the seafloor near Japan. It was a two-meter-wide circular pattern, and it looked like a piece of art. Who created this mysterious but beautiful artwork? Surprisingly, the artist was a tiny fish! The fish is a species of pufferfish that is only 12 centimeters long. It builds a structure that is 20 times its size by only using its fins! First, the male fish creates a circle on the seafloor. Then, it waves its fins along the circle. This makes small valleys and hills. Finally, it gathers up the sand in the center to make a nest. The entire process takes six weeks. When the nest is complete, a female pufferfish will lay eggs in it. What a creative home-builder the male pufferfish is!