1 Click it to lock the touch's screen, or to wake it up. 2  Hold it down for a few seconds to turn the touch on and off. 3  You'll also use it, along with the Home button, to restart the touch. 4  Home Button-This button at the bottom center of the touch's face has many functions.
The Largest Animal Ever: The Blue Whale. The blue whale (Balaenoptera musculus) is a marine mammal belonging to the suborder of baleen whales. At 30 metres (98 ft) in length and 180 metric tons (200 short tons) or more in weight, it is the largest known animal to have ever existed.
Big in Every Way. Blue whales are so big they are the biggest creature ever to have lived on earth - even bigger than the biggest dinosaurs! The largest whale ever measured was a female weighing 171,000 kgs and measuring over 90ft./27m long. The longest whale measured in at over 110ft./33m.