Scientists have good news—numbers of blue whales in the eastern Pacific Ocean（太平洋）are the highest they have been in over a century. The University of Washington says that there are over 2,200 blue whales between Mexico and Alaska. Blue whales were killed closed to extinction in that area. Whaling became illegal in 1971. So numbers of whales started increasing. It has taken 40 years for the blue whale to increase. Dr Monnahan was very happy at this good news. He said: "For us, this is a great success story."
Dr Monnahan said the number of blue whales might not rise above 2,200. He said: "Some people thought that number should be going up, but if there were about 2,200 whales to begin with, then that is what the environment can support." He warned that the animal still needs protection and only survived because people took action to stop killing and start watching. He said without this, the whales could be extinct. He added that the rise in numbers shows "the ability of blue whale populations to rebuild under careful management and protection".
本时文内容由奇速英语国际教育研究院原创编写，禁止复制和任何商业用途，版权所有，侵权必究！
13980503458
13980503458
admin@qisuen.cn