We Find Blue Whales In All The Oceans Of World - Make It Active Sentence
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The blue whale is the world's largest marine mammal and the largest living animal in the world. The animal, whose scientific name is Balaenoptera musculus, belongs to a suborder called Mysticeti or baleen whales. Adult baleen whales do not have teeth, but instead, they possess baleen plates which are made of keratin. On average, an adult blue whale measures between 70 and 90 feet in length and they weigh between 100 and 150 tons. Due to their large size, blue whales have some of the largest organs in the animal kingdom. Their tongues, for example, weigh around 2.7 tons while the heart of a typical sized adult blue whale weighs about 180 kilograms. However, in spite of their large size, blue whales feed almost exclusively on small crustaceans known as krill.