OREANDA-NEWS. DNA and the stable isotope analysis of an abnormal skull from Natural History Museum of Denmark allowed researchers to confirm existence dug - a beluga hybrid. DThis first and the only certificate of the fact that this two species of the Arctic whales can be crossed in the world.

Zubaty whales of a white whale (Delphinapterus leucas) and narvala (Monodon monoceros) are the only representatives of family the narvalovykh. They approximately identical sizes: males reach 5.5 meters in length and 800-1600 kilograms, females a little more small than males weigh.

Types differ with coloring — adult white whales of white or light gray color, narvala are covered with gray, brown and white spots.