Balaenoptera musculus is commonly known as the blue whale, the largest animal on earth. Apart from this scientific name, there are several other synonyms that one can use to refer to this species. These include Sibbaldius sulfur, sulfur whale, and great northern rorqual. Additionally, there are several local and regional names used for blue whales, including "sulphur-bottom" in California and "Pacific Rorqual" in the North Pacific. Some indigenous populations in Alaska refer to blue whales as "Agavux̂," while the Inuit in Canada call them "aqalik," both of which translate to "the big one." Regardless of what name you use, the Balaenoptera musculus remains a remarkable creature that is as fascinating as it is massive.