Question

The largest whale, Balaenoptera is found in
A. Indian Ocean
B. Antarctic Ocean
C. Atlantic Ocean
D. Pacific Ocean

Answer 1

Hint: The blue whale is found alone or in small groups in all oceans, but populations in the southern hemisphere are much larger. In the northern hemisphere, blue whales can be seen regularly in the Gulf of St. Lawrence and off the coasts of monetary, California, Mexico.

Step by step answer:Blue whales are the largest animals to have ever existed. It is difficult to imagine the size of the blue whale. Balaenoptera musculus is the name of the blue whale. It is the largest marine mammal. The largest population of this mammal is found in the Antarctic ocean. It is 30 meter long with 173 tonnes of weight. They have a long body which is tapering at both ends. The head is flat and the dorsal fin is short. They have flippers. The lung capacity is very high. Blue whales live in all the world’s oceans, except the arctic. The largest whale ever weighed was a 22.7 m pregnant female caught by Japanese whalers in the antarctic in 1948 which weighed 69.5 tonnes, not including 6% for loss of fluids during the flensing process. They occasionally swim in small groups but usually alone or in pairs. They often spend summers feeding in polar waters and undertake lengthy migrations towards the Equator as winter arrives.
Hence option B is correct.

Note: Earth’s largest animal, the blue whale can eat some 4 to 8 tons of krill per day. Average life span in the wild to 80 to 90 years. Over 1000 whales a year are killed for such commercial purposes. Females Are generally larger than males, and the largest animals live in the Southern Ocean around Antarctica.