article_snippet: These are the stunning aerial images that appear to show an 'underwater vortex' in the Indian Ocean off the coast of Mauritius.
article_snippet: Dramatic: Aerial pictures appear to show an 'underwater vortex' in the Indian Ocean off the coast of the island .
article_snippet: an 'underwater vortex' in the Indian Ocean is really an optical illusion and is caused by a build up of sand and silt deposits along the coast of Mauritius .
highlights_snippet: Stunning aerial pictures appear to show a dramatic 'underwater vortex' in the Indian Ocean near to Mauritius .
  