Beluga
Beluga prefer the colder northern waters of Canada. They are often found in the St. Lawrence river where they may remain until the first sign of freeze over. White whales travel in gams of 100 individuals which are subdivided into groups of 2 or 3 whales. Their head can turn to the side (unlike other whales).
Listen to the Belugas!
Source: http://www.canadianarcticholidays.ca/
Key Facts

Scientific name : Delphinapterus leucas

Size : Body 3-5 m long

Habitat : Shallow water

Distribution : Arctic and Subarctic Waters

Reproduction : Female produces single offspring in the late March though May; gestation fed by mother for 14 months

Diet : Fish, squid, octopus