Some Underwater Facts

Mar 3rd, 2011 by arima
  • Due to the natural “momentum” of the ocean, saltwater fish cannot swim backwards.
  • The blue whale is the largest creature that has ever lived on earth. It tips the scales at a whopping 170 tons – that’s the same as about 22 elephants. Its heart is the size of a small car, and its largest blood vessels are wide enough for an adult to swim through without much difficulty.
  • On average, sharks kill 10 humans every year. Approximately 100 people die each year when they are stepped on by cows.
  • The water spider lives underwater but breathes air by using its web to create an underwater sac that stores air bubbles.
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