The Blue Whale is the largest animal ever known to have lived on Earth. It can grow up to over 100 feet long and weigh around 200 tons, feeding mainly on krill. Blue Whales were heavily hunted for their blubber and oil until 1966, bringing the species close to extinction before laws were passed banning commercial whaling and protecting the Blue Whale population.

2.  The Blue Whale has been the largest animal that ever lived on Earth.
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Cetacea
Family: Balaenopteridae
Genus: Balaenoptera
Species: B. musculus

3. Shape- Fishlike with flukes.
Length- 100 feet long.
Height- About 20 feet tall.
Weight- About 200 tons.
Color and markings- Molted blue grey with yellow underbellies.
Temper- blue whales are usually calm unless threatened or
scared.
Habits and behavior- they travel long distances for food and
breeding.
Defense- speed and whacking with tail.
Acquiring food- migrate with krill.
Life span- 80to90 years.
Other- average heart rate is 8 beats per minute.

6. They were hunted for their blubber and oil
before 1966. they were on the brink of
extinction until they made laws against
hunting whales.