Complete the text with the correct words from the list.

Too much noise can be ... for some ... animals. Whales use low-frequency ... to keep track of each other, tell others where food is and find each other to ... . These ... sounds can be heard for hundreds or thousands kilometers but whales must listen very carefully. In the last one hundred years, people have flooded the oceans with noise from ... oil drilling and the use of ... which have a drastic effect on animals. As a result sea creatures can’t hear or communicate in a proper way. For instance, a ... of whales has been reduced from 1000 to 100 miles, making it harder to locate a mate. The sound blasts of sonars are so ... that they cause bleeding of the eyes, ears and organs of whales and dolphins. Some of them even become stranded. The environmentalists and just those people who feel ... for sea creatures campaign for ships and oil companies to move away from the areas where there are a lot of animals.