Whales are not just large mammals

Sea mammals need constantly swim to surface to take deep breath. Horizontal flipper makes easier whale emersion to surface and allows this creatures to handle blowhole over the surface. Their blowhole is located in upper part of the head. Do you know that whales do sleep? Whales are mammals, that why they need at regular intervals float to the surface and inhale fresh air. Also they need to maintain certain lung volume to ensure floatation of their huge bodies. That’s why whales do not sleep as deep as humans. Narcotized to put in sleep, whale sink or stop breathing and then perish. Do you know that whales pumps up blood with a higher horse power than your air conditioning unit? after birth blue whale run up to 7 meters in length. After 13 years it reaches a point of maturity and becoming 30 meters length and weight near 150 tons. Heart of blue whale weights 0,5 tons and pumps 8 tons of blood, developing 10 horse-powers.