The fluctuating temperatures in the core depend on pressure, the rotation of the Earth, and the varying composition of core elements. In general, temperatures range from about 4,400Â° Celsius (7,952Â° Fahrenheit) to about 6,000Â° Celsius (10,800Â° Fahrenheit).
Baleen whale (suborder Mysticeti), also called toothless whale, any cetacean possessing unique epidermal modifications of the mouth called baleen, which is used to filter food from water. Baleen whales seek out concentrations of small planktonic animals. The whales then open their mouth and take in enormous quantities of water. When the mouth is closed, they squeeze the water out through the sides, catching the tiny prey on the baleenâs bristles. (See also cetacean: Feeding adaptations).
The word rorqual means tube whale or furrowed whale, referring to the pleats on the lower jaws of rorquals. All rorquals have baleen, a dorsal fin and throat grooves. Other members of this family include the humpback whale, fin whale, and minke whale. The blue whale's scientific name is Balaenoptera musculus. Its generic name, Balaenoptera, means winged whale, which refers to the blue whale's dorsal fin. The blue whale's specific name, musculus, means little mouse. The blue whale is currently the largest extant animal. Blue whales may exceed 100ft in length and 100 tons in weight. Female blue whales are usually larger than males of the same age.