article_snippet.sent: However, experts have dismissed the claims as being 'unscientific'.
article_snippet.sent: Researchers believe that the changes in behaviour may be linked to airborne ions.
article_snippet.sent: Others believe the sandy shoals around Hokato city may have also made the animal's sonar ineffective.
article_snippet.sent: the whales frightened by disturbances in the Earth's electromagnetic field caused by movement in the tectonic plates - there were was no firm evidence of this.
article_snippet.sent: However, it is not know if whales have the ability to detect such tiny fluctuations.
highlights_snippet.sent: Experts have dismissed rumours of impending earthquake as unscientific .
  