WONDERS OF LIVING WORLD

• Blue or Sulphur-bottom whale is the largest living animal.
  
• A sea-wasp is not a wasp but is a kind of jelly-fish.
  
• Humming birds can fly backwards.
  
• Snails, earthworms, sea cucumbers and sea hares are among the species which have both male and female sex organs in the same organism.
  
• Giraffe have the largest neck and longest tail.
  
• "Abaca"(mainly grown in Philippines) is the toughest of all natural fibers.
  
• Some fish migrate from sea to fresh water for breeding. This phenomenon is called "Anadromy".