This white whale related to the narwhal is the only whale that can bend its neck
... Marine mammals are placental 
mammalsanimals that retain their young inside their ... placenta: an organ 
present only during pregnancy that sustains the young .... can hold breath without 
urge to breathe .... are unique for their white color and ability to bend neck, are 
found in... [DOC] [TLE] Beluga Whale - Delphinapterus leucas - Details - Encyclopedia of Life [PAR] Sounds can be used to detect prey; the enlarged melon is an ... Beluga Whale: A 
gregarious white whale of Arctic coasts primarily inhabiting areas with sea ice ... 
with prominent melon and short beak; Flexible neck allows them to turn their 
heads ....