The reading passage provides three theories to support the main sources of the underwater noises heard by the Russian submarines. However, the professor believes that this sound is a very strange phenomenon and there are lot of debates what are the main causes. He points out that there are problems with all the theories that are mentioned in the passage.
To begin with, the article contends that this sound may be the calls of male and female ocra whales that inhabit these areas. In the other hand, the professor states that this may be plausible in the beginning but it seems unlikely to be the main cause later. He mentions that the ocra whales live in the surface of the ocean while the submarines usually are located deeply in the ocean so probably they will not be able to hear their noises. Also, he says that the ocra whales can be easily detected by sonar.
Secondly, the author implies that this sound might be caused by a gaint squid which has a soft body without a skeleton and that is why it cannot be detected by the sonar. The lecturer, in contrast, points out that the Russian submarines detected this noise in 1960 and continued hearing it for two decades and then suddenly disappeared. While gaint squids live in the ocean long time ago and continue living till today. He states that no reason to hear the noises for one decade and then suddenly stopped after 20 years.
Finally, the reading posits that this sound may be due to another country's submarines. The professor opposes this point by explaining that this sound moves very fast in different directions and it could not be another submarines since that Russian submarines could not hear the noise of another engine. He states that even with the technology today people can not invent silent engine or fast submarines.
The reading passage provides three theories to support the main sources of the underwater
noises
heard by the Russian
submarines
.
However
, the professor believes that this
sound
is a
very
strange phenomenon and there are
lot of
debates what are the main causes. He points out that there are problems with all the theories that
are mentioned
in the passage.
To
begin
with, the article contends that this
sound
may be the calls of male and female
ocra
whales that inhabit these areas. In the other hand, the professor states that this may be plausible in the beginning
but
it seems unlikely to be the main cause later. He mentions that the
ocra
whales
live
in the surface of the ocean while the
submarines
usually
are located
deeply
in the ocean
so
probably
they will not be able to hear their
noises
.
Also
, he says that the
ocra
whales can be
easily
detected by sonar.
Secondly
, the author implies that this
sound
might
be caused
by a
gaint
squid which has a soft body without a skeleton and
that is
why it cannot
be detected
by the sonar. The lecturer,
in contrast
, points out that the Russian
submarines
detected this
noise
in 1960 and continued hearing it for two decades and then
suddenly
disappeared. While
gaint
squids
live
in the ocean long time ago and continue living till
today
. He states that no reason to hear the
noises
for one decade and then
suddenly
stopped
after 20 years.
Finally
, the reading posits that this
sound
may be due to another country's
submarines
. The professor opposes this point by explaining that this
sound
moves
very
fast
in
different
directions and it could not be another
submarines
since that Russian
submarines
could not hear the
noise
of another engine. He states that even with the technology
today
people
can not invent silent engine or
fast
submarines
.