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The scientists say their
with Twain was not a
one. Professor Brenda McCowan said it was more like a series of
. Whales use contact calls to let other whales know where they are. The scientists made the
call 36 times over a 20-minute
. Each time, Twain responded by calling back. She even matched the intervals between each call the researchers made. Professor McCowan told the Business Insider website that her
could make it
to talk to aliens. She said: "There are
intelligences on this planet. By studying them, we can better understand what an alien
might be like because they are not going to be
like ours."
