The blue whale is the largest mammal to have ever inhabited the Earth, but not much is known about these fascinating creatures that populate our oceans. This research examines the physical description and habits of the blue whale, the habitat in which it lives, and the major threats this endangered species faces today. Although hunting was banned in 1966 by the International Whaling Commission, blue whales are still exposed to numerous threats today, all caused by humans. The population is so low that any further killing could lead to the extinction of this species in the future. The blue whale is the largest and loudest animal to ever exist on Earth. These magnificent creatures can grow up to 100 feet and weigh more than 200 tons. Their hearts are the size of a small car and a baby could crawl through their arteries. Recent studies from the National Geographic Channel suggest that blue whales use vocalization sounds to communicate with each other across the vastness of the sea. This study also suggests that blue whales use their evolved sense of hearing to navigate and locate food in the ocean's depths. Blue whales are baleen whales, meaning they have fringed blades hanging from their upper jaws instead of teeth, called baleen. Blue whales have a mottled gray coloration, however, beneath the surface they appear blue. Blue whales are air-breathing animals, but can remain underwater for more than 30 minutes. The blue whale's habitat ranges from the Northern Hemisphere to the Southern Hemisphere; they can be found in all major oceans. They are marine mammals that spend the summers feeding in the cold, temperate waters of the North and South Poles, but during the winter and spring they migrate......middle of paper......we know that the blue whale is the largest and loudest animal that ever lived on Earth. Blue whales can be found in all major oceans from the Northern Hemisphere to the Southern Hemisphere. The blue whale is also an endangered species due to commercial whaling in the 1900s. However, recent studies suggest that ship strikes and noise pollution are the main reason why the blue whale population has not recovered. it is still included in the list of species at risk of extinction. Although there are international laws that protect them, there is still much work to be done to save blue whales from extinction. I believe blue whales are the most fascinating creatures in the sea. However, it is our responsibility to protect the blue whale as best we can to ensure that videos on the internet and pictures in books are not our only option for seeing blue whales in the future..