The Blue Whale

I always like to start things off with a bang, so the first animal I will be discussing is the largest animal on earth. The Blue Whale weighs in at about 200 tons and can grow to 110 feet long. Its heart is the size of a car. It's tongue is as big as an elephant, and it has blood vessels big enough for a person to swim through.

Strangely enough, the biggest animal on earth feeds almost exclusively on tiny creatures called Krill. You can find Krill at most pet stores where they are sold as fish food. Blue whales pull huge amounts of water into their mouths and filter it back out through hairlike teeth called baleen. They can eat up to 40 million krill in a single day.

Blue whales used to be hunted in large numbers by the whaling industry. While this practice has been largely shut down, the blue whale is still an endangered species. It is now very rare to encounter them in the wild. You can see some great video footage of the blue whale here:

Content courtesy of: Aqua Marine Discovery

Published 19 August 2008 06:15 PM by BioBlogger
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