Part 1 of Essay
weighs as much as 20 elephants but lives beneath the sea. The blue is Earth's largest animal. Larger than the largest of ancient dinosaurs, blue s can grow to be more than 100 feet (30 meters) long and weigh nearly 150 tons. Not all s are so large. The much smaller pilot grows to about 28 feet (8.5 meters) in length. An ....

Part 2 of Essay
.... migrate with the seasons; others remain year-round in the same habitats, where they find their preferred food. The present-day distribution and abundance of some species has been greatly influenced by the commercial whaling industry. rs eliminated or greatly reduced the numbers of some species of baleen s in certain oceanic regions where s once frolicked in abundance. This is particularly true in parts of the Arctic Ocean and the eastern North Atlantic Ocean, where the blue was almost completely exterminat ....