The Cumberland Sound belugas are a distinct population of belugas residing in the Cumberland Sound region of the Labrador Sea off the coast of Nunavut, Canada Individuals of this population reside in the sound year-round, congregating in its extreme north exclusively at during the summer for calving. The Cumberland Sound beluga population is considered fairly isolated and genetically distinct from other beluga populations, with a notable number of haplotypes and microsatellite loci not found elsewhere.