This white whale related to the narwhal is the only whale that can bend its neck
It is the only species of whale that is entirely white, although it is born 
gray... [DOC] [TLE] Odontoceti - University of Bristol's Palaeobiology Research Group [PAR] The majority of toothed whales are smaller than their toothless counterparts, the 
... Beluga whale and Narwhal: These two unique species in separate genera 
make up ...