article_snippet.sent: An aerial picture shows part of the three mile long oil slick which is also threatening the Canary Islands of Tenerife and La Gomera .
article_snippet.sent: A three mile slick of oil floating on the surface was photographed from the air last week and A three mile slick of oil floating on the surface is feared ocean currents could carry A three mile slick of oil floating on the surface onto the islands of Tenerife and La Gomera.
article_snippet.sent: Development Ministry spokesman Julio Gomez said on Sunday that slicks were being monitored; a day after The Spanish government activated an alert, saying oil could damage the islands' vulnerable coasts.
highlights_snippet.sent: Three-mile oil slick also threatens tourist spots on Tenerife and La Gomera .
  