Whales found a new sense organ
The whales are the largest mammals on Earth in the modern world. Cetaceans, in particular whales have the largest size among animals - blue whale (blue whale) has a body length of 25 m (the largest 33 m) and weight - 90-120 tonnes All cetaceans, including whales, dolphins and porpoises. are descendants of terrestrial mammals Artiodactyla squad.
According to the molecular-genetic data and cetaceans and artiodactyl are kitoparnokopytnym, which includes whales, hippos and all other even-toed ungulates. Furthermore, these data are hippopotamus closest living relatives whales. They occurred about 54 million years ago from a common ancestor. Whales have moved to aquatic life approximately 50 million years ago. For the mere ingestion of sea water, whales are able to swallow and filter about 80 m3 of water and get 10 kilograms of food.
Like all mammals, whales breathe air through lungs, are warm-blooded, feed calves milk from the mammary glands and have some (albeit rather small) wool. Body fusiform, such as the streamlined body of the fish. Fins, sometimes also called flippers, are lopasteoobrazny appearance. At the end of the tail fin is of two horizontal blades, playing the role of a stabilizer and provides forward movement due to vertical movements. During its latest research, scientists have discovered a new sensory organ in whales, which is responsible for the supply mechanism. Horny plate of the upper jaw, which helps these marine animals filter water are controlled as the whole jaw special sensory organ size of a grapefruit. Is the organ in the chin
To feed the whales dive to a depth of wide-open mouth and swallows several thousand liters of water for a few seconds.