In contrast to the conventional theory of biology, a big fish that lives deep in the Pacific Ocean has been found to be warm blooded, like humans, other mammals and birds. The fish is known as Opah, or moonfish which lives deep below the ocean's surface and uses its unique features to generate and store heat. The observation has been made by researchers from the National Oceanic and Atmospheric Administration (NOAA). According to their observation unlike other fish, opah generates heat as they swim and distribute the warmth throughout their entire disc-shaped bodies by special blood vessels.