Blue
whales are the largest animals ever known to have lived on Earth. These
magnificent marine mammals rule the oceans at up to 100 feet ….
Blue
whales are the largest animals ever known to have lived on Earth. These
magnificent marine mammals rule the oceans at up to 100 feet (30 meters)
long and upwards of 200 tons (181 metric tons). Their tongues alone can
weigh as much as an elephant, their hearts as much as an automobile.
Blue
whales reach these mind-boggling dimensions on a diet composed nearly
exclusively of tiny shrimplike animals called krill. During certain
times of the year, a single adult blue whale consumes about 4 tons (3.6
metric tons) of krill a day.
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