The Blue Whale
The Blue Whale is largest whale and the
largest living creature on Earth. Blue whales were hunted a lot for
oil,baleen,meat, and other products from the 1930s to the 1960s. This hunting
almost caused the extinction of the species. They are now protected and may
gradually be returning in saveral areas.
Blue whales are mainly found in very
cold waters, like the Arctic and Antarctic waters. They migrate to the tropics
in the winter and to the Arctic and Antarctic in summer.
Blue whales can reach over 24 m (80ft )
long; mature females are ussually a bit longer than mature males. They weight
between 87,500-142,500 kg. The skin has a light grey and white spotty pattern.
Blue whales feed by opening its mouth
into dense groups of small sea creatures like plankton, krill of fish.
Blue whales are mammals. They give
birth once every to or three years. Mating occurs during the summer season, and
they give birth after about 11 months. The calf nurse for seven or eight months
and gain weight about 90 kg ( 200 lb ) per day.
Source
: BSE Scaffolding book page 69
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