Blue Whale is the largest animal on Earth. With a mass of 199 tons and a length of 29.9 m they are bluish grey in colour. They eat tons and tons of krill which is their diet. Orcas or killer whales are their predators. They breathe through blowholes. They are found in Eastern Canada and the Eastern United States. Their tongue and heart is as big as an elephant and a 400 pound piano respectively. Their veins are so big that we can swim through them. They are also the loudest animal on Earth.
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