Analyzing The Term 'Quackers'

The passage discusses three possible reasons for strange noises, name "quackers", that Russian submarine sailors had reported during a period of time from the 1960s to the1980s. The author mentions three sources for these sounds, including nearby Orca whales vocalization trying to attract mates, the giant squids which live in the ocean and finally the undetectable foreign submarines. The professor, however, believes that none of these theories could justify the real source of these noises. The professor's reasons to refute these theories are as follows.

First, the author suggests that the Orca whales which live in the ocean might make special noises to attract mates. Although the professors says this could be possible in the beginning, she