The Cumberland Sound is a body of water between Baffin Island's Hall Peninsula and the Cumberland Peninsula in Nunavut, Canada. It is approximately 150km long and 80km wide. It is home to the Cumberland Sound Beluga whale, an endangered species thought to reside year-round in the sound, with summers spent at the northern end. Killer whales also use the sound. Baffin Island, Nunavut. ... The Cumberland Peninsula is a peninsula in the southeastern part of Baffin Island, in Nunavut, Canada. ... Motto: Nunavut Sannginivut (Inuktitut, Nunavut our strength / Our land our strength) Other Canadian provinces and territories Capital Iqaluit Largest city Iqaluit Commissioner Ann Meekitjuk Hanson Premier Paul Okalik (independent) Area 2,093,190 km² (1st) Land 1,936,113 km² Water 157,077 km² (7. ...