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.
The blue whale is considered the largest living marine mammal in the world. In fact the blue whale is one of the largest animals to ever inhibit the earth and is even larger than most dinosaurs. When fully grown these large marine mammals can measure in at over 100 ft.