Blue whale | Facts, Habitat, & Pictures
Blue whales are the largest animals ever known to have lived on Earth.
These magnificent mammals rule the oceans at up to 100 feet long and upwards
of 200 tons. Their tongues alone can weigh as much as an elephant.
Amazing facts about the Blue Whale
Size of Blue whale:
Blue whales are the largest mammal to have ever lived on the Earth, growing
to lengths of 30 meters (100 feet), or as long as three school buses.
Blue whale heart:
A blue whale's heart is the biggest on the planet, weighing 400 pounds. A
blue whale's heartbeat slows dramatically during dives to over 1,000 feet.
In one study, a diving blue whale's heart slowed to 4-8 beats a minute, with
an extreme low of only two beats, a drastic measure to save oxygen.
Facts About Color of Blue Whale:
Although blue whales are thought to have a deep blue color, when they are
at the surface of the water they actually appear grey. When blue whales dive
down again, the color of the water and the light from the sun make them look
deeper blue than they really are.
Voice Of Blue Whale:
Although we cannot hear them underwater, blue whales have one of the
loudest voices on Earth. Their call can be louder than a jet engine, and has
been measured at 188 decibels. It is thought that in good conditions blue
whales can hear each other across distances of up to 1,600 km (994
miles).
What is the longest whale?
The Antarctic blue whale (Balaenoptera musculus ssp. Intermedia) is the
biggest animal on the planet, weighing up to 400,000 pounds (approximately
33 elephants) and reaching up to 98 feet in length.
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