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).
View full size image. The worldâs largest whale is also the largest animal on the planet â the blue whale. At 98 feet in length and 180 metric tons, the blue whale tops even dinosaurs to be the largest animal ever. They filter krill through their baleen, and need 4-8 tons of the tiny plankton per day to survive. Each whaleâs jaws contains about 320 pairs of black baleen plates with dark gray bristles. A blue whale tongue alone can weigh as much as an elephant. The animals live to be 80-90 years old and live all around the worldâs oceans, spending summers in cold polar waters and winters closer to the Equator.